Java/Swing Components/Data Validation

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Component Hints Example

/*
Code revised from Desktop Java Live:
http://www.sourcebeat.ru/downloads/
*/
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import com.jgoodies.binding.PresentationModel;
import com.jgoodies.binding.adapter.BasicComponentFactory;
import com.jgoodies.binding.value.ValueModel;
import com.jgoodies.forms.builder.DefaultFormBuilder;
import com.jgoodies.forms.builder.PanelBuilder;
import com.jgoodies.forms.layout.FormLayout;
import com.jgoodies.validation.ValidationCapable;
import com.jgoodies.validation.ValidationResult;
import com.jgoodies.validation.util.DefaultValidationResultModel;
import com.jgoodies.validation.util.PropertyValidationSupport;
import com.jgoodies.validation.util.ValidationResultModel;
import com.jgoodies.validation.util.ValidationUtils;
import com.jgoodies.validation.view.ValidationComponentUtils;
import com.jgoodies.validation.view.ValidationResultViewFactory;
public class ComponentHintsExample extends JPanel {
    private Feed feed;
    private FeedPresentationModel feedPresentationModel;
    private JPanel panel1;
    private JPanel panel2;
    private JPanel panel3;
    private JComponent iconPanel;
    private ValidationResultModel validationModel;
    public ComponentHintsExample() {
        this.validationModel = new DefaultValidationResultModel();
        createFeed();
        this.feedPresentationModel = new FeedPresentationModel(this.feed);
        ValueModel nameModel = this.feedPresentationModel.getModel("name");
        DefaultFormBuilder formBuilder1 = new DefaultFormBuilder(new FormLayout("right:pref, 3dlu, p:g"));
        JTextField nameField1 = BasicComponentFactory.createTextField(nameModel, false);
        ValidationComponentUtils.setMandatory(nameField1, true);
        ValidationComponentUtils.setMessageKey(nameField1, "form.name_key");
        formBuilder1.append("Name:", nameField1);
        DefaultFormBuilder formBuilder2 = new DefaultFormBuilder(new FormLayout("right:pref, 3dlu, p:g"));
        JTextField nameField2 = BasicComponentFactory.createTextField(nameModel, false);
        ValidationComponentUtils.setMandatory(nameField2, true);
        ValidationComponentUtils.setMessageKey(nameField2, "form.name_key");
        formBuilder2.append("Name:", nameField2);
        DefaultFormBuilder formBuilder3 = new DefaultFormBuilder(new FormLayout("right:pref, 3dlu, p:g"));
        JTextField nameField3 = BasicComponentFactory.createTextField(nameModel, false);
        ValidationComponentUtils.setMandatory(nameField3, true);
        ValidationComponentUtils.setMessageKey(nameField3, "form.name_key");
        formBuilder3.append("Name:", nameField3);
        DefaultFormBuilder formBuilder4 = new DefaultFormBuilder(new FormLayout("right:pref, 4dlu, p:g"));
        JTextField nameField4 = BasicComponentFactory.createTextField(nameModel, false);
        ValidationComponentUtils.setMandatory(nameField4, true);
        ValidationComponentUtils.setMessageKey(nameField4, "form.name_key");
        formBuilder4.append("Name:", nameField4);
        //Padding for overlay icon
        formBuilder4.appendRow("5dlu");
        this.panel1 = formBuilder1.getPanel();
        this.panel2 = formBuilder2.getPanel();
        this.panel3 = formBuilder3.getPanel();
        this.iconPanel = new IconFeedbackPanel(this.validationModel, formBuilder4.getPanel());
        PanelBuilder builder = new PanelBuilder(new FormLayout("p:g"));
        builder.setDefaultDialogBorder();
        builder.appendRow("p");
        builder.add(this.panel1);
        builder.nextLine();
        builder.appendRow("p");
        builder.add(this.panel2);
        builder.nextLine();
        builder.appendRow("p");
        builder.add(this.panel3);
        builder.nextLine();
        builder.appendRow("4dlu");
        builder.nextLine();
        builder.appendRow("p");
        builder.add(this.iconPanel);
        builder.nextLine();
        builder.appendRow("4dlu");
        builder.nextLine();
        builder.appendRow("p:g");
        builder.nextLine();
        builder.appendRow("p");
        builder.addLabel("Results");
        builder.nextLine();
        builder.appendRow("50dlu");
        builder.add(ValidationResultViewFactory.createReportList(this.validationModel));
        add(builder.getPanel());
    }
    private void createFeed() {
        this.feed = new Feed();
        this.feed.setName("ClientJava.ru");
        this.feed.setSiteUrl("http://www.clientjava.ru/blog");
        this.feed.setFeedUrl("http://www.clientjava.ru/blog/rss.xml");
    }
    public class FeedPresentationModel extends PresentationModel implements ValidationCapable {
        private ValidationResultModel validationResultModel;
        public FeedPresentationModel(Object bean) {
            super(bean);
            this.validationResultModel = new DefaultValidationResultModel();
            initEventHandling();
        }
        public ValidationResultModel getValidationModel() {
            return this.validationResultModel;
        }
        public ValidationResult validate() {
            PropertyValidationSupport support = new PropertyValidationSupport(feed, "form");
            String name = (String) getModel("name").getValue();
            if (!ValidationUtils.isEmpty(name)) {
                if (!"ClientJava.ru".equals(name)) {
                    support.addWarning("name_key", "is not ClientJava.ru");
                }
                if (name.length() < 5) {
                    support.addError("name_key", "must be more than 4 characters long.");
                }
            }
            return support.getResult();
        }
        private void initEventHandling() {
            PropertyChangeListener handler = new ValueUpdateHandler();
            addBeanPropertyChangeListener(handler);
            getBeanChannel().addValueChangeListener(handler);
        }

        public class ValueUpdateHandler implements PropertyChangeListener {
            public void propertyChange(PropertyChangeEvent evt) {
                updateComponents();
            }
            private void updateComponents() {
                ValidationResult result = validate();
                validationModel.setResult(result);
                ValidationComponentUtils.updateComponentTreeMandatoryAndBlankBackground(panel1);
                ValidationComponentUtils.updateComponentTreeMandatoryBackground(panel2);
                ValidationComponentUtils.updateComponentTreeMandatoryBorder(panel3);
                ValidationComponentUtils.updateComponentTreeValidationBackground(panel1, result);
            }
        }
    }
    public static void main(String[] a){
      JFrame f = new JFrame("Component Hints Example");
      f.setDefaultCloseOperation(2);
      f.add(new ComponentHintsExample());
      f.pack();
      f.setVisible(true);
    }
}





Different configurations of JFormattedTextField

/*
 * Copyright (c) 2003-2005 JGoodies Karsten Lentzsch. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 * 
 *  o Redistributions of source code must retain the above copyright notice, 
 *    this list of conditions and the following disclaimer. 
 *     
 *  o Redistributions in binary form must reproduce the above copyright notice, 
 *    this list of conditions and the following disclaimer in the documentation 
 *    and/or other materials provided with the distribution. 
 *     
 *  o Neither the name of JGoodies Karsten Lentzsch nor the names of 
 *    its contributors may be used to endorse or promote products derived 
 *    from this software without specific prior written permission. 
 *     
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */
package com.jgoodies.validation.tutorial.formatted;
import java.text.DateFormat;
import java.text.Format;
import java.util.Date;
import java.util.LinkedList;
import java.util.List;
import javax.swing.*;
import javax.swing.text.DateFormatter;
import javax.swing.text.DefaultFormatter;
import javax.swing.text.DefaultFormatterFactory;
import com.jgoodies.binding.value.ValueHolder;
import com.jgoodies.binding.value.ValueModel;
import com.jgoodies.forms.builder.DefaultFormBuilder;
import com.jgoodies.forms.layout.FormLayout;
import com.jgoodies.validation.formatter.EmptyDateFormatter;
import com.jgoodies.validation.formatter.RelativeDateFormatter;
import com.jgoodies.validation.tutorial.formatted.format.DisplayFormat;
import com.jgoodies.validation.tutorial.formatted.format.RelativeDateFormat;
import com.jgoodies.validation.tutorial.util.ExampleComponentFactory;
import com.jgoodies.validation.tutorial.util.MyFocusTraversalPolicy;
import com.jgoodies.validation.tutorial.util.TutorialUtils;
/**
 * Demonstrates different configurations of <code>JFormattedTextField</code>
 * to display and edit numbers. Shows <ul>
 * <li>how to use a custom DateFormat
 * <li>how to use a custom DateFormatter
 * <li>how to use a custom FormatterFactory
 * <li>how to reset a date to <code>null</code>
 * <li>how to map the empty string to a special date
 * <li>how to commit values on valid texts
 * </ul><p>
 * 
 * To look under the hood of this component, this class exposes 
 * the bound properties <em>text</em>, <em>value</em> and <em>editValid</em>. 
 *
 * @author  Karsten Lentzsch
 * @version $Revision: 1.8 $
 * 
 * @see     JFormattedTextField
 * @see     JFormattedTextField.AbstractFormatter
 */
public class DateExample {
    
    public static void main(String[] args) {
        try {
            UIManager.setLookAndFeel("com.jgoodies.looks.plastic.PlasticXPLookAndFeel");
        } catch (Exception e) {
            // Likely Plastic is not in the classpath; ignore it.
        }
        JFrame frame = new JFrame();
        frame.setTitle("Formatted :: Dates");
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        JComponent panel = new DateExample()
                .buildPanel();
        frame.getContentPane().add(panel);
        frame.pack();
        TutorialUtils.locateOnScreenCenter(frame);
        frame.setVisible(true);
    }
    /**
     * Builds and returns a panel with a header row and the sample rows.
     * 
     * @return the example panel with a header and the sample rows
     */
    public JComponent buildPanel() {
        FormLayout layout = new FormLayout(
                "r:max(80dlu;pref), 4dlu, 45dlu, 1dlu, pref, 4dlu, pref, 0:grow");
        DefaultFormBuilder builder = new DefaultFormBuilder(layout);
        builder.setDefaultDialogBorder();
        builder.getPanel().setFocusTraversalPolicy(
                MyFocusTraversalPolicy.INSTANCE);
                
        Utils.appendTitleRow(builder, "Description");
        List fields = appendDemoRows(builder);
        
        String validText   = DateFormat.getDateInstance().format(new Date(67, 11, 5));
        String invalidText = "aa" + validText;
        Utils.appendButtonBar(builder, fields, validText, invalidText);
        return builder.getPanel();
    }
    
    
    /**
     * Appends the demo rows to the given builder and returns the List of
     * formatted text fields.
     * 
     * @param builder  the builder used to add components to
     * @return the List of formatted text fields
     */
    private List appendDemoRows(DefaultFormBuilder builder) {
        // The Formatter is choosen by the initial value.
        JFormattedTextField defaultDateField = 
            new JFormattedTextField(new Date());
        
        // The Formatter is choosen by the given Format.
        JFormattedTextField noInitialValueField = 
            new JFormattedTextField(DateFormat.getDateInstance());
        
        // Uses a custom DateFormat.
        DateFormat customFormat = DateFormat.getDateInstance(DateFormat.SHORT);
        JFormattedTextField customFormatField =
            new JFormattedTextField(new DateFormatter(customFormat));
        
        // Uses a RelativeDateFormat.
        DateFormat relativeFormat = new RelativeDateFormat();
        JFormattedTextField relativeFormatField =
            new JFormattedTextField(new DateFormatter(relativeFormat));
        
        // Uses a custom DateFormatter that allows relative input and
        // prints natural language strings.
        JFormattedTextField relativeFormatterField =
            new JFormattedTextField(new RelativeDateFormatter());
        
        // Uses a custom FormatterFactory that used different formatters
        // for the display and while editing.
        DefaultFormatterFactory formatterFactory = 
            new DefaultFormatterFactory(new RelativeDateFormatter(false, true),
                                        new RelativeDateFormatter(true, true));
        JFormattedTextField relativeFactoryField =
            new JFormattedTextField(formatterFactory);
        
        // Wraps a DateFormatter to map empty strings to null and vice versa.
        JFormattedTextField numberOrNullField =
            new JFormattedTextField(new EmptyDateFormatter());
        
        // Wraps a DateFormatter to map empty strings to -1 and vice versa.
        Date epoch = new Date(0); // January 1, 1970
        JFormattedTextField numberOrEmptyValueField =
            new JFormattedTextField(new EmptyDateFormatter(epoch));
        numberOrEmptyValueField.setValue(epoch);
        
        // Commits value on valid edit text
        DefaultFormatter formatter = new RelativeDateFormatter();
        formatter.setCommitsOnValidEdit(true);
        JFormattedTextField commitOnValidEditField =
            new JFormattedTextField(formatter);
        
        // A date field as created by the BasicComponentFactory:
        // Uses relative date input, and maps empty strings to null.
        ValueModel dateHolder = new ValueHolder();
        JFormattedTextField componentFactoryField =
            ExampleComponentFactory.createDateField(dateHolder);
        
        Format displayFormat = new DisplayFormat(DateFormat.getDateInstance());
        List fields = new LinkedList();
        fields.add(Utils.appendRow(builder, "Default",               defaultDateField,        displayFormat));
        fields.add(Utils.appendRow(builder, "No initial value",      noInitialValueField,     displayFormat));
        fields.add(Utils.appendRow(builder, "Empty <->  null",       numberOrNullField,       displayFormat));
        fields.add(Utils.appendRow(builder, "Empty <-> epoch",       numberOrEmptyValueField, displayFormat));
        fields.add(Utils.appendRow(builder, "Short format",          customFormatField,       displayFormat));
        fields.add(Utils.appendRow(builder, "Relative format",       relativeFormatField,     displayFormat));
        fields.add(Utils.appendRow(builder, "Relative formatter",    relativeFormatterField,  displayFormat));
        fields.add(Utils.appendRow(builder, "Relative factory",      relativeFactoryField,    displayFormat));
        fields.add(Utils.appendRow(builder, "Commits on valid edit", commitOnValidEditField,  displayFormat));
        fields.add(Utils.appendRow(builder, "Relative, maps null",   componentFactoryField,   displayFormat));
        
        return fields;
    }
       
}





different configurations of JFormattedTextField: Number

/*
 * Copyright (c) 2003-2005 JGoodies Karsten Lentzsch. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 * 
 *  o Redistributions of source code must retain the above copyright notice, 
 *    this list of conditions and the following disclaimer. 
 *     
 *  o Redistributions in binary form must reproduce the above copyright notice, 
 *    this list of conditions and the following disclaimer in the documentation 
 *    and/or other materials provided with the distribution. 
 *     
 *  o Neither the name of JGoodies Karsten Lentzsch nor the names of 
 *    its contributors may be used to endorse or promote products derived 
 *    from this software without specific prior written permission. 
 *     
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */
package com.jgoodies.validation.tutorial.formatted;
import java.text.Format;
import java.text.NumberFormat;
import java.util.LinkedList;
import java.util.List;
import javax.swing.*;
import javax.swing.text.DefaultFormatter;
import javax.swing.text.DefaultFormatterFactory;
import javax.swing.text.NumberFormatter;
import com.jgoodies.forms.builder.DefaultFormBuilder;
import com.jgoodies.forms.layout.FormLayout;
import com.jgoodies.validation.formatter.EmptyNumberFormatter;
import com.jgoodies.validation.tutorial.formatted.format.DisplayFormat;
import com.jgoodies.validation.tutorial.formatted.formatter.CustomNumberFormatter;
import com.jgoodies.validation.tutorial.util.MyFocusTraversalPolicy;
import com.jgoodies.validation.tutorial.util.TutorialUtils;
/**
 * Demonstrates different configurations of <code>JFormattedTextField</code>
 * to display and edit numbers. Shows<ul>
 * <li>how to use a custom NumberFormat
 * <li>how to use a custom NumberFormatter
 * <li>how to use a custom FormatterFactory
 * <li>how to reset a number to <code>null</code>
 * <li>how to map the empty string to a special number
 * <li>how to commit values on valid texts
 * <li>how to set the class of the result
 * </ul><p>
 * 
 * To look under the hood of this component, this class exposes 
 * the bound properties <em>text</em>, <em>value</em> and <em>editValid</em>. 
 *
 * @author  Karsten Lentzsch
 * @version $Revision: 1.9 $
 * 
 * @see     JFormattedTextField
 * @see     JFormattedTextField.AbstractFormatter
 */
public class NumberExample {
    
    public static void main(String[] args) {
        try {
            UIManager.setLookAndFeel("com.jgoodies.looks.plastic.PlasticXPLookAndFeel");
        } catch (Exception e) {
            // Likely Plastic is not in the classpath; ignore it.
        }
        JFrame frame = new JFrame();
        frame.setTitle("Formatted :: Numbers");
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        JComponent panel = new NumberExample()
                .buildPanel();
        frame.getContentPane().add(panel);
        frame.pack();
        TutorialUtils.locateOnScreenCenter(frame);
        frame.setVisible(true);
    }
    /**
     * Builds and returns a panel with a header row and the sample rows.
     * 
     * @return the example panel with a header and the sample rows
     */
    public JComponent buildPanel() {
        FormLayout layout = new FormLayout(
                "r:max(80dlu;pref), 4dlu, 45dlu, 1dlu, pref, 4dlu, pref, 0:grow");
        DefaultFormBuilder builder = new DefaultFormBuilder(layout);
        builder.setDefaultDialogBorder();
        builder.getPanel().setFocusTraversalPolicy(
                MyFocusTraversalPolicy.INSTANCE);
                
        Utils.appendTitleRow(builder, "Description");
        List fields = appendDemoRows(builder);
        Utils.appendButtonBar(builder, fields, "42", "aa42");
        return builder.getPanel();
    }
    
    
    /**
     * Appends the demo rows to the given builder and returns the List of
     * formatted text fields.
     * 
     * @param builder  the builder used to add components to
     * @return the List of formatted text fields
     */
    private List appendDemoRows(DefaultFormBuilder builder) {
        // The Formatter is choosen by the initial value.
        JFormattedTextField defaultNumberField = 
            new JFormattedTextField(new Long(42));
        
        // The Formatter is choosen by the given Format.
        JFormattedTextField noInitialValueField = 
            new JFormattedTextField(NumberFormat.getIntegerInstance());
        
        // Uses a custom NumberFormat.
        NumberFormat customFormat = NumberFormat.getIntegerInstance();
        customFormat.setMinimumIntegerDigits(3);
        JFormattedTextField customFormatField =
            new JFormattedTextField(new NumberFormatter(customFormat));
        
        // Uses a custom NumberFormatter that prints natural language strings.
        JFormattedTextField customFormatterField =
            new JFormattedTextField(new CustomNumberFormatter());
        
        // Uses a custom FormatterFactory that used different formatters
        // for the display and while editing.
        DefaultFormatterFactory formatterFactory = 
            new DefaultFormatterFactory(new NumberFormatter(),
                                        new CustomNumberFormatter());
        JFormattedTextField formatterFactoryField =
            new JFormattedTextField(formatterFactory);
        
        // Wraps a NumberFormatter to map empty strings to null and vice versa.
        JFormattedTextField numberOrNullField =
            new JFormattedTextField(new EmptyNumberFormatter());
        
        // Wraps a NumberFormatter to map empty strings to -1 and vice versa.
        Integer emptyValue = new Integer(-1);
        JFormattedTextField numberOrEmptyValueField =
            new JFormattedTextField(new EmptyNumberFormatter(emptyValue));
        numberOrEmptyValueField.setValue(emptyValue);
        
        // Commits values on valid edit texts.
        DefaultFormatter formatter = new NumberFormatter();
        formatter.setCommitsOnValidEdit(true);
        JFormattedTextField commitOnValidEditField =
            new JFormattedTextField(formatter);
        // Returns number values of type Integer
        NumberFormatter numberFormatter = new NumberFormatter();
        numberFormatter.setValueClass(Integer.class);
        JFormattedTextField integerField = 
            new JFormattedTextField(numberFormatter);
        
        Format displayFormat = new DisplayFormat(NumberFormat.getIntegerInstance());
        Format typedDisplayFormat = new DisplayFormat(NumberFormat.getIntegerInstance(), true);
        List fields = new LinkedList();
        fields.add(Utils.appendRow(builder, "Default",               defaultNumberField,      typedDisplayFormat));
        fields.add(Utils.appendRow(builder, "No initial value",      noInitialValueField,     displayFormat));
        fields.add(Utils.appendRow(builder, "Empty <-> null",        numberOrNullField,       displayFormat));
        fields.add(Utils.appendRow(builder, "Empty <->   -1",        numberOrEmptyValueField, displayFormat));
        fields.add(Utils.appendRow(builder, "Custom format",         customFormatField,       displayFormat));
        fields.add(Utils.appendRow(builder, "Custom formatter",      customFormatterField,    displayFormat));
        fields.add(Utils.appendRow(builder, "Formatter factory",     formatterFactoryField,   displayFormat));
        fields.add(Utils.appendRow(builder, "Commits on valid edit", commitOnValidEditField,  displayFormat));
        fields.add(Utils.appendRow(builder, "Integer Result",        integerField,            typedDisplayFormat));
        
        return fields;
    }
       
}





Different styles how to indicate that a component contains invalid data

/*
 * Copyright (c) 2003-2005 JGoodies Karsten Lentzsch. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 * 
 *  o Redistributions of source code must retain the above copyright notice, 
 *    this list of conditions and the following disclaimer. 
 *     
 *  o Redistributions in binary form must reproduce the above copyright notice, 
 *    this list of conditions and the following disclaimer in the documentation 
 *    and/or other materials provided with the distribution. 
 *     
 *  o Neither the name of JGoodies Karsten Lentzsch nor the names of 
 *    its contributors may be used to endorse or promote products derived 
 *    from this software without specific prior written permission. 
 *     
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */
package com.jgoodies.validation.tutorial.basics;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.*;
import com.jgoodies.forms.builder.PanelBuilder;
import com.jgoodies.forms.layout.CellConstraints;
import com.jgoodies.forms.layout.FormLayout;
import com.jgoodies.validation.ValidationResult;
import com.jgoodies.validation.tutorial.shared.Order;
import com.jgoodies.validation.tutorial.shared.OrderModel;
import com.jgoodies.validation.tutorial.util.ExampleComponentFactory;
import com.jgoodies.validation.tutorial.util.IconFeedbackPanel;
import com.jgoodies.validation.tutorial.util.TutorialUtils;
import com.jgoodies.validation.util.ValidationResultModel;
import com.jgoodies.validation.view.ValidationComponentUtils;
/**
 * Demonstrates different styles how to indicate that a component
 * contains invalid data: 
 * background changes if empty,
 * background reflects the severity, 
 * overlayed icons the reflect the severity. 
 * 
 * @author Karsten Lentzsch
 * @version $Revision: 1.8 $
 */
public class ComponentFeedbackExample {
    
    private final OrderModel orderModel;
    
    private JTextField mandatoryOrderNoField;
    private JTextField mandatoryOrderDateField;
    private JTextField mandatoryDeliveryDateField;
    private JTextArea  mandatoryDeliveryNotesArea;
    private JComponent mandatoryPanel;
    
    private JTextField severityOrderNoField;
    private JTextField severityOrderDateField;
    private JTextField severityDeliveryDateField;
    private JTextArea  severityDeliveryNotesArea;
    private JComponent severityPanel;
    
    private JTextField iconOrderNoField;
    private JTextField iconOrderDateField;
    private JTextField iconDeliveryDateField;
    private JTextArea  iconDeliveryNotesArea;
    private JComponent iconOverlayPanel;
    
    public static void main(String[] args) {
        try {
            UIManager.setLookAndFeel("com.jgoodies.looks.plastic.PlasticXPLookAndFeel");
        } catch (Exception e) {
            // Likely Plastic is not in the classpath; ignore it.
        }
        JFrame frame = new JFrame();
        frame.setTitle("Basics :: Component Feedback");
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        JComponent panel = new ComponentFeedbackExample().buildPanel();
        frame.getContentPane().add(panel);
        frame.pack();
        TutorialUtils.locateOnScreenCenter(frame);
        frame.setVisible(true);
    }
    
    // Instance Creation ******************************************************
    public ComponentFeedbackExample() {
        orderModel  = new OrderModel(new Order());
    }
    
    
    // Component Creation and Initialization **********************************
    private void initComponents() {
        mandatoryOrderNoField = ExampleComponentFactory.createTextField(
                orderModel.getModel(Order.PROPERTYNAME_ORDER_NO), false);
        mandatoryOrderDateField = ExampleComponentFactory.createDateField(
                orderModel.getModel(Order.PROPERTYNAME_ORDER_DATE), 
                true);
        mandatoryDeliveryDateField = ExampleComponentFactory.createDateField(
                orderModel.getModel(Order.PROPERTYNAME_DELIVERY_DATE), 
                true);
        mandatoryDeliveryNotesArea = ExampleComponentFactory.createTextArea(
                orderModel.getModel(Order.PROPERTYNAME_DELIVERY_NOTES), false);
        severityOrderNoField = ExampleComponentFactory.createTextField(
                orderModel.getModel(Order.PROPERTYNAME_ORDER_NO), false);
        severityOrderDateField = ExampleComponentFactory.createDateField(
                orderModel.getModel(Order.PROPERTYNAME_ORDER_DATE));
        severityDeliveryDateField = ExampleComponentFactory.createDateField(
                orderModel.getModel(Order.PROPERTYNAME_DELIVERY_DATE), 
                true);
        severityDeliveryNotesArea = ExampleComponentFactory.createTextArea(
                orderModel.getModel(Order.PROPERTYNAME_DELIVERY_NOTES), false);
        iconOrderNoField = ExampleComponentFactory.createTextField(
                orderModel.getModel(Order.PROPERTYNAME_ORDER_NO), false);
        iconOrderDateField = ExampleComponentFactory.createDateField(
                orderModel.getModel(Order.PROPERTYNAME_ORDER_DATE));
        iconDeliveryDateField = ExampleComponentFactory.createDateField(
                orderModel.getModel(Order.PROPERTYNAME_DELIVERY_DATE), 
                true);
        iconDeliveryNotesArea = ExampleComponentFactory.createTextArea(
                orderModel.getModel(Order.PROPERTYNAME_DELIVERY_NOTES), false);
    }
    
    
    private void initComponentAnnotations() {
        ValidationComponentUtils.setMandatory(mandatoryOrderNoField, true);
        ValidationComponentUtils.setMessageKey(mandatoryOrderNoField, "Order.Order No");
        ValidationComponentUtils.setMandatory(mandatoryOrderDateField, true);
        ValidationComponentUtils.setMessageKey(mandatoryOrderDateField, "Order.Order Date");
        ValidationComponentUtils.setMessageKey(mandatoryDeliveryDateField, "Order.Delivery Date");
        ValidationComponentUtils.setMessageKey(mandatoryDeliveryNotesArea, "Order.Notes");
        
        ValidationComponentUtils.setMandatory(severityOrderNoField, true);
        ValidationComponentUtils.setMessageKey(severityOrderNoField, "Order.Order No");
        ValidationComponentUtils.setMandatory(severityOrderDateField, true);
        ValidationComponentUtils.setMessageKey(severityOrderDateField, "Order.Order Date");
        ValidationComponentUtils.setMessageKey(severityDeliveryDateField, "Order.Delivery Date");
        ValidationComponentUtils.setMessageKey(severityDeliveryNotesArea, "Order.Notes");
        ValidationComponentUtils.setMandatory(iconOrderNoField, true);
        ValidationComponentUtils.setMessageKey(iconOrderNoField, "Order.Order No");
        ValidationComponentUtils.setMandatory(iconOrderDateField, true);
        ValidationComponentUtils.setMessageKey(iconOrderDateField, "Order.Order Date");
        ValidationComponentUtils.setMessageKey(iconDeliveryDateField, "Order.Delivery Date");
        ValidationComponentUtils.setMessageKey(iconDeliveryNotesArea, "Order.Notes");
    }
    
    
    private void initEventHandling() {
        orderModel.getValidationResultModel().addPropertyChangeListener(
                ValidationResultModel.PROPERTYNAME_RESULT,
                new ValidationChangeHandler());
    }
    
    // Building ***************************************************************
    /**
     * Builds and returns the whole editor with 3 sections 
     * for the different validation times.
     */
    public JComponent buildPanel() {
        initComponents();
        initComponentAnnotations();
        initEventHandling();
        
        mandatoryPanel   = buildMandatoryPanel();
        severityPanel    = buildSeverityPanel();
        iconOverlayPanel = buildIconOverlayPanel();
        
        FormLayout layout = new FormLayout(
                "fill:pref:grow",
                "p, 3dlu, p, 17dlu, p, 3dlu, p, 17dlu, p, 3dlu, p");
        
        PanelBuilder builder = new PanelBuilder(layout);
        builder.setDefaultDialogBorder();
        CellConstraints cc = new CellConstraints();
        
        builder.addSeparator("Background Indicates Blank Mandatory Fields", cc.xy(1,  1));
        builder.add(mandatoryPanel,                                         cc.xy(1,  3));
        builder.addSeparator("Background Indicates Invalid Input",          cc.xy(1,  5));
        builder.add(severityPanel,                                          cc.xy(1,  7));
        builder.addSeparator("Icons Indicate Invalid Input",                cc.xy(1,  9));
        builder.add(iconOverlayPanel,                                       cc.xy(1, 11));
        
        // Synchronize the presentation with the current validation state.
        // If you want to show no validation info before the user has typed
        // anything in the form, use the commented EMPTY result
        // instead of the model"s validation result.
        updateComponentTreeMandatoryAndSeverity(
                orderModel.getValidationResultModel().getResult()
                // ValidationResult.EMPTY
        );
        
        return builder.getPanel();
    }
    
    
    private JComponent buildMandatoryPanel() {
        FormLayout layout = new FormLayout(
                "right:max(65dlu;pref), 4dlu, 40dlu, 2dlu, 40dlu, 80dlu:grow",
                "p, 3dlu, p, 3dlu, p, 3dlu, p");
        
        layout.setRowGroups(new int[][]{{1, 3, 5, 7}});
        PanelBuilder builder = new PanelBuilder(layout);
        CellConstraints cc = new CellConstraints();
        
        builder.addLabel("Order No",             cc.xy  (1, 1));
        builder.add(mandatoryOrderNoField,       cc.xyw (3, 1, 3));
        builder.addLabel("Order-/Delivery Date", cc.xy  (1, 3));
        builder.add(mandatoryOrderDateField,     cc.xy  (3, 3));
        builder.add(mandatoryDeliveryDateField,  cc.xy  (5, 3));
        builder.add(new JScrollPane(mandatoryDeliveryNotesArea),
                                                 cc.xywh(3, 5, 4, 3));
        return builder.getPanel();
    }
    
    
    private JComponent buildSeverityPanel() {
        FormLayout layout = new FormLayout(
                "right:max(65dlu;pref), 4dlu, 40dlu, 2dlu, 40dlu, 80dlu:grow",
                "p, 3dlu, p, 3dlu, p, 3dlu, p");
        
        layout.setRowGroups(new int[][]{{1, 3, 5, 7}});
        PanelBuilder builder = new PanelBuilder(layout);
        CellConstraints cc = new CellConstraints();
        
        builder.addLabel("Order No",             cc.xy  (1, 1));
        builder.add(severityOrderNoField,        cc.xyw (3, 1, 3));
        builder.addLabel("Order-/Delivery Date", cc.xy  (1, 3));
        builder.add(severityOrderDateField,      cc.xy  (3, 3));
        builder.add(severityDeliveryDateField,   cc.xy  (5, 3));
        builder.add(new JScrollPane(severityDeliveryNotesArea),
                                                 cc.xywh(3, 5, 4, 3));
        return builder.getPanel();
    }
    
    
    private JComponent buildIconOverlayPanel() {
        FormLayout layout = new FormLayout(
                "right:max(65dlu;pref), 4dlu, 40dlu, 2dlu, 40dlu, 80dlu:grow",
                "p, 3dlu, p, 3dlu, p, 3dlu, p, 4px"); // extra bottom space for icons
        
        layout.setRowGroups(new int[][]{{1, 3, 5, 7}});
        PanelBuilder builder = new PanelBuilder(layout);
        CellConstraints cc = new CellConstraints();
        
        builder.addLabel("Order No",             cc.xy  (1, 1));
        builder.add(iconOrderNoField,            cc.xyw (3, 1, 3));
        builder.addLabel("Order-/Delivery Date", cc.xy  (1, 3));
        builder.add(iconOrderDateField,          cc.xy  (3, 3));
        builder.add(iconDeliveryDateField,       cc.xy  (5, 3));
        builder.addLabel("Notes",                cc.xy  (1, 5));
        builder.add(new JScrollPane(iconDeliveryNotesArea),
                                                 cc.xywh(3, 5, 4, 3));
        
        return new IconFeedbackPanel(
                orderModel.getValidationResultModel(), 
                builder.getPanel()
                );
    }
    
    
    // Event Handling *********************************************************
    
    private void updateComponentTreeMandatoryAndSeverity(ValidationResult result) {
        ValidationComponentUtils.updateComponentTreeMandatoryAndBlankBackground(
                mandatoryPanel);
        ValidationComponentUtils.updateComponentTreeSeverityBackground(
                severityPanel, 
                result);
    }
    
    /**
     * Updates the component background in the mandatory panel and the
     * validation background in the severity panel. Invoked whenever
     * the observed validation result changes. 
     */
    private class ValidationChangeHandler implements PropertyChangeListener {
        public void propertyChange(PropertyChangeEvent evt) {
            updateComponentTreeMandatoryAndSeverity(
                    (ValidationResult) evt.getNewValue());
        }
    }
       
}





Different styles to mark mandatory fields

/*
 * Copyright (c) 2003-2005 JGoodies Karsten Lentzsch. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 * 
 *  o Redistributions of source code must retain the above copyright notice, 
 *    this list of conditions and the following disclaimer. 
 *     
 *  o Redistributions in binary form must reproduce the above copyright notice, 
 *    this list of conditions and the following disclaimer in the documentation 
 *    and/or other materials provided with the distribution. 
 *     
 *  o Neither the name of JGoodies Karsten Lentzsch nor the names of 
 *    its contributors may be used to endorse or promote products derived 
 *    from this software without specific prior written permission. 
 *     
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */
package com.jgoodies.validation.tutorial.basics;
import javax.swing.*;
import com.jgoodies.forms.builder.PanelBuilder;
import com.jgoodies.forms.layout.CellConstraints;
import com.jgoodies.forms.layout.FormLayout;
import com.jgoodies.validation.tutorial.util.TutorialUtils;
import com.jgoodies.validation.view.ValidationComponentUtils;
/**
 * Demonstrates different styles how to mark mandatory fields. 
 * The fields in this demo are not bound and not validated.
 * 
 * @author Karsten Lentzsch
 * @version $Revision: 1.4 $
 */
public class MandatoryMarkerExample {
    
    private JLabel orderNoLabel;
    private JLabel orderDateLabel;
    
    private JTextField backgroundOrderNoField;
    private JTextField backgroundOrderDateField;
    private JTextField backgroundDeliveryDateField;
    
    private JTextField borderOrderNoField;
    private JTextField borderOrderDateField;
    private JTextField borderDeliveryDateField;
    
    public static void main(String[] args) {
        try {
            UIManager.setLookAndFeel("com.jgoodies.looks.plastic.PlasticXPLookAndFeel");
        } catch (Exception e) {
            // Likely Plastic is not in the classpath; ignore it.
        }
        JFrame frame = new JFrame();
        frame.setTitle("Basics :: Mandatory Marker");
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        JComponent panel = new MandatoryMarkerExample().buildPanel();
        frame.getContentPane().add(panel);
        frame.pack();
        TutorialUtils.locateOnScreenCenter(frame);
        frame.setVisible(true);
    }
    
    // Component Creation and Initialization **********************************
    private void initComponents() {
        orderNoLabel   = createMandatoryLabel("Order No");
        orderDateLabel = createMandatoryLabel("Order-");
        backgroundOrderNoField      = new JTextField();
        backgroundOrderDateField    = new JTextField();
        backgroundDeliveryDateField = new JTextField();
        borderOrderNoField = new JTextField();
        borderOrderDateField = new JTextField();
        borderDeliveryDateField = new JTextField();
    }
    
    private void initComponentAnnotations() {
        ValidationComponentUtils.setMandatory(backgroundOrderNoField, true);
        ValidationComponentUtils.setMandatory(backgroundOrderDateField, true);
        ValidationComponentUtils.setMandatory(borderOrderNoField, true);
        ValidationComponentUtils.setMandatory(borderOrderDateField, true);
    }
    
    
    // Building ***************************************************************
    /**
     * Builds and returns the whole editor with 3 sections 
     * for the different validation times.
     */
    public JComponent buildPanel() {
        initComponents();
        initComponentAnnotations();
        
        FormLayout layout = new FormLayout(
                "fill:pref:grow",
                "p, 3dlu, p, 17dlu, p, 3dlu, p, 17dlu, p, 3dlu, p, 17dlu, p, 3dlu, p");
        
        PanelBuilder builder = new PanelBuilder(layout);
        builder.setDefaultDialogBorder();
        CellConstraints cc = new CellConstraints();
        
        builder.addSeparator("Label with *",         cc.xy(1,  1));
        builder.add(buildLabelWithStarPanel(),       cc.xy(1,  3));
        builder.addSeparator("Label Foreground",     cc.xy(1,  5));
        builder.add(buildLabelForegroundPanel(),     cc.xy(1,  7));
        builder.addSeparator("Component Background", cc.xy(1,  9));
        builder.add(buildComponentBackgroundPanel(), cc.xy(1, 11));
        builder.addSeparator("Component Border",     cc.xy(1, 13));
        builder.add(buildComponentBorderPanel(),     cc.xy(1, 15));
        return builder.getPanel();
    }
    
    
    private JComponent buildLabelWithStarPanel() {
        FormLayout layout = new FormLayout(
                "right:max(65dlu;pref), 4dlu, 40dlu, 2dlu, 40dlu",
                "p, 3dlu, p");
        
        PanelBuilder builder = new PanelBuilder(layout);
        CellConstraints cc = new CellConstraints();
        
        builder.addLabel("Order No*",             cc.xy (1, 1));
        builder.add(new JTextField(),             cc.xyw(3, 1, 3));
        builder.addLabel("Order-*/Delivery Date", cc.xy (1, 3));
        builder.add(new JTextField(),             cc.xy (3, 3));
        builder.add(new JTextField(),             cc.xy (5, 3));
        return builder.getPanel();
    }
    
    
    private JComponent buildLabelForegroundPanel() {
        FormLayout layout = new FormLayout(
                "right:max(65dlu;pref), 4dlu, 40dlu, 2dlu, 40dlu",
                "p, 3dlu, p");
        
        PanelBuilder builder = new PanelBuilder(layout);
        CellConstraints cc = new CellConstraints();
        
        builder.add(orderNoLabel,                 cc.xy (1, 1));
        builder.add(new JTextField(),             cc.xyw(3, 1, 3));
        builder.add(buildDateLabelBar(),          cc.xy (1, 3));
        builder.add(new JTextField(),             cc.xy (3, 3));
        builder.add(new JTextField(),             cc.xy (5, 3));
        return builder.getPanel();
    }
    
    private JComponent buildDateLabelBar() {
        FormLayout layout = new FormLayout("pref, pref", "pref");
        PanelBuilder builder = new PanelBuilder(layout);
        builder.add(orderDateLabel);
        builder.nextColumn();
        builder.addLabel("/Delivery Date");
        return builder.getPanel();
    }

    
    
    private JComponent buildComponentBackgroundPanel() {
        FormLayout layout = new FormLayout(
                "right:max(65dlu;pref), 4dlu, 40dlu, 2dlu, 40dlu",
                "p, 3dlu, p");
        
        PanelBuilder builder = new PanelBuilder(layout);
        CellConstraints cc = new CellConstraints();
        
        builder.addLabel("Order No",              cc.xy (1, 1));
        builder.add(backgroundOrderNoField,       cc.xyw(3, 1, 3));
        builder.addLabel("Order-/Delivery Date",  cc.xy (1, 3));
        builder.add(backgroundOrderDateField,     cc.xy (3, 3));
        builder.add(backgroundDeliveryDateField,  cc.xy (5, 3));
        
        ValidationComponentUtils.updateComponentTreeMandatoryBackground(
                builder.getPanel());
        
        return builder.getPanel();
    }
    
    private JComponent buildComponentBorderPanel() {
        FormLayout layout = new FormLayout(
                "right:max(65dlu;pref), 4dlu, 40dlu, 2dlu, 40dlu",
                "p, 3dlu, p");
        
        PanelBuilder builder = new PanelBuilder(layout);
        CellConstraints cc = new CellConstraints();
        
        builder.addLabel("Order No",              cc.xy (1, 1));
        builder.add(borderOrderNoField,           cc.xyw(3, 1, 3));
        builder.addLabel("Order-/Delivery Date",  cc.xy (1, 3));
        builder.add(borderOrderDateField,         cc.xy (3, 3));
        builder.add(borderDeliveryDateField,      cc.xy (5, 3));
        ValidationComponentUtils.updateComponentTreeMandatoryBorder(
                builder.getPanel());
        return builder.getPanel();
    }
    
    
    // Helper Code ************************************************************
    
    private static JLabel createMandatoryLabel(String text) {
        JLabel label = new JLabel(text);
        label.setForeground(ValidationComponentUtils.getMandatoryForeground());
        return label;
    }
       
}





Different validation result views

/*
 * Copyright (c) 2003-2005 JGoodies Karsten Lentzsch. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 * 
 *  o Redistributions of source code must retain the above copyright notice, 
 *    this list of conditions and the following disclaimer. 
 *     
 *  o Redistributions in binary form must reproduce the above copyright notice, 
 *    this list of conditions and the following disclaimer in the documentation 
 *    and/or other materials provided with the distribution. 
 *     
 *  o Neither the name of JGoodies Karsten Lentzsch nor the names of 
 *    its contributors may be used to endorse or promote products derived 
 *    from this software without specific prior written permission. 
 *     
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */
package com.jgoodies.validation.tutorial.basics;
import java.awt.event.ActionEvent;
import javax.swing.*;
import com.jgoodies.forms.builder.PanelBuilder;
import com.jgoodies.forms.factories.ButtonBarFactory;
import com.jgoodies.forms.layout.CellConstraints;
import com.jgoodies.forms.layout.FormLayout;
import com.jgoodies.validation.ValidationResult;
import com.jgoodies.validation.tutorial.util.TutorialUtils;
import com.jgoodies.validation.util.DefaultValidationResultModel;
import com.jgoodies.validation.util.ValidationResultModel;
import com.jgoodies.validation.view.ValidationResultViewFactory;
/**
 * Demonstrates the different validation result views created by the
 * {@link com.jgoodies.validation.view.ValidationResultViewFactory}.
 * Provides buttons to set a couple of valid and invalid results. 
 * 
 * @author  Karsten Lentzsch
 * @version $Revision: 1.5 $
 */
public class ValidationResultViewExample {
    
    private final ValidationResultModel resultModel;
    
    private JButton validButton;
    private JButton errorsButton;
    private JButton warningsButton;
    private JButton mixedButton;
    
    public static void main(String[] args) {
        try {
            UIManager.setLookAndFeel("com.jgoodies.looks.plastic.PlasticXPLookAndFeel");
        } catch (Exception e) {
            // Likely Plastic is not in the classpath; ignore it.
        }
        JFrame frame = new JFrame();
        frame.setTitle("Basics :: Validation Result Views");
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        JComponent panel = new ValidationResultViewExample().buildPanel();
        frame.getContentPane().add(panel);
        frame.pack();
        TutorialUtils.locateOnScreenCenter(frame);
        frame.setVisible(true);
    }
    
    
    // Instance Creation ******************************************************
    public ValidationResultViewExample() {
        resultModel = new DefaultValidationResultModel();
        resultModel.setResult(TutorialUtils.getMixedResult());
    }
    
    
    // Component Creation and Initialization **********************************
    private void initComponents() {
        validButton    = new JButton(new SetResultAction("Valid", ValidationResult.EMPTY));
        errorsButton   = new JButton(new SetResultAction("Errors", TutorialUtils.getErrorsResult()));
        warningsButton = new JButton(new SetResultAction("Warnings", TutorialUtils.getWarningsResult()));
        mixedButton    = new JButton(new SetResultAction("Mixed", TutorialUtils.getMixedResult()));
    }
    
    
    // Building ***************************************************************
    /**
     * Builds and returns the whole editor with 3 sections 
     * for the different validation times.
     */
    public JComponent buildPanel() {
        initComponents();
        
        FormLayout layout = new FormLayout(
                "right:max(65dlu;pref), 4dlu, 160dlu:grow",
                "p, 9dlu, p, 9dlu, fill:max(34dlu;p), 9dlu, fill:34dlu, 9dlu, fill:34dlu, 9dlu:grow, p");
        
        PanelBuilder builder = new PanelBuilder(layout);
        builder.setDefaultDialogBorder();
        CellConstraints cc = new CellConstraints();
        
        builder.addLabel("Icon Summary",               cc.xy (1,  1));
        builder.add(ValidationResultViewFactory.
            createReportIconLabel(resultModel),        cc.xy (3,  1));
        
        builder.addLabel("Icon and Text Summary",      cc.xy (1,  3));
        builder.add(ValidationResultViewFactory.
            createReportIconAndTextLabel(resultModel), cc.xy (3,  3));
        
        builder.addLabel("Texts and Summary Icon",     cc.xy (1,  5, "r, t"));
        builder.add(ValidationResultViewFactory.
            createReportIconAndTextPane(resultModel),  cc.xy (3,  5));
        
        builder.addLabel("List",                       cc.xy (1,  7, "r, t"));
        builder.add(ValidationResultViewFactory.
            createReportList(resultModel),             cc.xy (3,  7));
        
        builder.addLabel("Text Pane",                  cc.xy (1,  9, "r, t"));
        builder.add(ValidationResultViewFactory.
            createReportTextPane(resultModel),         cc.xy (3,  9));
        
        builder.add(buildButtonBar(),                  cc.xyw(1, 11, 3));
        return builder.getPanel();
    }
    
    
    
    private JComponent buildButtonBar() {
        return ButtonBarFactory.buildRightAlignedBar(
                validButton, errorsButton, warningsButton, mixedButton);
    }
    
    // Helper Code ************************************************************
    
    /**
     * Sets the given ValidationResult as the resultModel"s result
     * when performed. Used to create the 4 command buttons.
     */
    private class SetResultAction extends AbstractAction {
        private final ValidationResult result;
        
        SetResultAction(String name, ValidationResult result) {
            super(name);
            this.result = result;
        }
        
        public void actionPerformed(ActionEvent e) {
            resultModel.setResult(result);
        }
        
    }
       
}





different validation times: key-typed, focus lost, commit (OK pressed)

/*
 * Copyright (c) 2003-2005 JGoodies Karsten Lentzsch. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 * 
 *  o Redistributions of source code must retain the above copyright notice, 
 *    this list of conditions and the following disclaimer. 
 *     
 *  o Redistributions in binary form must reproduce the above copyright notice, 
 *    this list of conditions and the following disclaimer in the documentation 
 *    and/or other materials provided with the distribution. 
 *     
 *  o Neither the name of JGoodies Karsten Lentzsch nor the names of 
 *    its contributors may be used to endorse or promote products derived 
 *    from this software without specific prior written permission. 
 *     
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */
package com.jgoodies.validation.tutorial.basics;
import java.awt.event.ActionEvent;
import javax.swing.*;
import com.jgoodies.binding.PresentationModel;
import com.jgoodies.forms.builder.PanelBuilder;
import com.jgoodies.forms.factories.ButtonBarFactory;
import com.jgoodies.forms.layout.CellConstraints;
import com.jgoodies.forms.layout.FormLayout;
import com.jgoodies.validation.ValidationResult;
import com.jgoodies.validation.tutorial.shared.Order;
import com.jgoodies.validation.tutorial.shared.OrderModel;
import com.jgoodies.validation.tutorial.shared.OrderValidator;
import com.jgoodies.validation.tutorial.util.ExampleComponentFactory;
import com.jgoodies.validation.tutorial.util.TutorialUtils;
import com.jgoodies.validation.util.DefaultValidationResultModel;
import com.jgoodies.validation.util.ValidationResultModel;
import com.jgoodies.validation.view.ValidationResultViewFactory;
/**
 * Demonstrates and compares different validation times: 
 * key-typed, focus lost, commit (OK pressed). 
 * 
 * @author  Karsten Lentzsch
 * @version $Revision: 1.5 $
 */
public class ValidationTimeExample {
    
    private OrderModel keyTypedModel;
    private JTextField keyTypedOrderNoField;
    private JTextField keyTypedOrderDateField;
    private JComponent keyTypedResultView;
    
    private OrderModel focusLostModel;
    private JTextField focusLostOrderNoField;
    private JTextField focusLostOrderDateField;
    private JComponent focusLostResultView;
    
    private CommitOrderModel commitModel;
    private JTextField commitOrderNoField;
    private JTextField commitOrderDateField;
    private JComponent commitResultView;
    private JButton    commitOKButton;
    private JButton    commitCancelButton;
    
    public static void main(String[] args) {
        try {
            UIManager.setLookAndFeel("com.jgoodies.looks.plastic.PlasticXPLookAndFeel");
        } catch (Exception e) {
            // Likely Plastic is not in the classpath; ignore it.
        }
        JFrame frame = new JFrame();
        frame.setTitle("Basics :: Validation Time");
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        JComponent panel = new ValidationTimeExample().buildPanel();
        frame.getContentPane().add(panel);
        frame.pack();
        TutorialUtils.locateOnScreenCenter(frame);
        frame.setVisible(true);
    }
    
    // Instance Creation ******************************************************
    public ValidationTimeExample() {
        keyTypedModel  = new OrderModel(new Order());
        focusLostModel = new OrderModel(new Order());
        commitModel    = new CommitOrderModel(new Order());
    }
    
    
    // Component Creation and Initialization **********************************
    private void initComponents() {
        // To commit on key typed we invoke #createTextField
        // with the optional boolean parameter set to false.
        keyTypedOrderNoField = ExampleComponentFactory.createTextField(
                keyTypedModel.getModel(Order.PROPERTYNAME_ORDER_NO), 
                false);
        // We can"t commit Dates on key typed, only on valid edit.
        keyTypedOrderDateField = ExampleComponentFactory.createDateField(
                keyTypedModel.getModel(Order.PROPERTYNAME_ORDER_DATE), 
                true,
                true);
        keyTypedResultView = ValidationResultViewFactory.createReportIconAndTextPane(
                keyTypedModel.getValidationResultModel());
        // By default #createTextField commits on focus lost
        focusLostOrderNoField = ExampleComponentFactory.createTextField(
                focusLostModel.getModel(Order.PROPERTYNAME_ORDER_NO));
        focusLostOrderDateField = ExampleComponentFactory.createDateField(
                focusLostModel.getModel(Order.PROPERTYNAME_ORDER_DATE));
        focusLostResultView = ValidationResultViewFactory.createReportIconAndTextPane(
                focusLostModel.getValidationResultModel());
        // Here we delay commits by using the Binding buffering support.
        commitOrderNoField = ExampleComponentFactory.createTextField(
                commitModel.getBufferedModel(Order.PROPERTYNAME_ORDER_NO));
        commitOrderDateField = ExampleComponentFactory.createDateField(
                commitModel.getBufferedModel(Order.PROPERTYNAME_ORDER_DATE));
        commitResultView = ValidationResultViewFactory.createReportIconAndTextPane(
                commitModel.getValidationResultModel());
        commitOKButton = new JButton(commitModel.getOKAction());
        commitCancelButton = new JButton(commitModel.getCancelAction());
    }
    
    
    // Building ***************************************************************
    /**
     * Builds and returns the whole editor with 3 sections 
     * for the different validation times.
     */
    public JComponent buildPanel() {
        initComponents();
        
        FormLayout layout = new FormLayout(
                "fill:pref:grow",
                "p, 3dlu, p, 6dlu, p, 3dlu, p, 6dlu, p, 3dlu, p");
        
        PanelBuilder builder = new PanelBuilder(layout);
        builder.setDefaultDialogBorder();
        CellConstraints cc = new CellConstraints();
        
        builder.addSeparator("Validate on Key Typed",   cc.xy(1,  1));
        builder.add(buildKeyTypedPanel(),               cc.xy(1,  3));
        builder.addSeparator("Validate on Focus Lost",  cc.xy(1,  5));
        builder.add(buildFocusLostPanel(),              cc.xy(1,  7));
        builder.addSeparator("Validate on Commit (OK)", cc.xy(1,  9));
        builder.add(buildCommitPanel(),                 cc.xy(1, 11));
        return builder.getPanel();
    }
    
    
    private JComponent buildKeyTypedPanel() {
        FormLayout layout = new FormLayout(
                "right:max(65dlu;pref), 4dlu, 40dlu, 2dlu, 40dlu, 80dlu:grow",
                "p, 3dlu, p, 9dlu, fill:max(22dlu;p)");
        
        PanelBuilder builder = new PanelBuilder(layout);
        CellConstraints cc = new CellConstraints();
        
        builder.addLabel("Order No",         cc.xy (1, 1));
        builder.add(keyTypedOrderNoField,    cc.xyw(3, 1, 3));
        builder.addLabel("Order Date",       cc.xy (1, 3));
        builder.add(keyTypedOrderDateField,  cc.xy (3, 3));
        builder.addLabel("(commits on valid edit)", cc.xyw(5, 3, 2));
        builder.add(keyTypedResultView,      cc.xyw(3, 5, 4));
        return builder.getPanel();
    }
    
    
    private JComponent buildFocusLostPanel() {
        FormLayout layout = new FormLayout(
                "right:max(65dlu;pref), 4dlu, 40dlu, 2dlu, 40dlu, 80dlu:grow",
                "p, 3dlu, p, 9dlu, fill:max(22dlu;p)");
        
        PanelBuilder builder = new PanelBuilder(layout);
        CellConstraints cc = new CellConstraints();
        
        builder.addLabel("Order No",         cc.xy (1, 1));
        builder.add(focusLostOrderNoField,   cc.xyw(3, 1, 3));
        builder.addLabel("Order Date",       cc.xy (1, 3));
        builder.add(focusLostOrderDateField, cc.xy (3, 3));
        builder.add(focusLostResultView,     cc.xyw(3, 5, 4));
        return builder.getPanel();
    }
    
    
    private JComponent buildCommitPanel() {
        FormLayout layout = new FormLayout(
                "right:max(65dlu;pref), 4dlu, 40dlu, 2dlu, 40dlu, 80dlu:grow",
                "p, 3dlu, p, 9dlu, fill:max(22dlu;p), 2dlu:grow, p");
        
        PanelBuilder builder = new PanelBuilder(layout);
        CellConstraints cc = new CellConstraints();
        
        builder.addLabel("Order No",         cc.xy (1, 1));
        builder.add(commitOrderNoField,      cc.xyw(3, 1, 3));
        builder.addLabel("Order Date",       cc.xy (1, 3));
        builder.add(commitOrderDateField,    cc.xy (3, 3));
        builder.add(commitResultView,        cc.xyw(3, 5, 4));
        builder.add(buildCommitButtonBar(),  cc.xyw(3, 7, 4));
        return builder.getPanel();
    }
    
    private JComponent buildCommitButtonBar() {
        return ButtonBarFactory.buildRightAlignedBar(
                commitOKButton, commitCancelButton);
    }
    
    // Domain Classes *********************************************************
    
    /**
     * Provides the validation result model and actions necessary to 
     * build a presentation.
     */
    private static final class CommitOrderModel extends PresentationModel {
        
        private final ValidationResultModel validationResultModel;
        private final Action okAction;
        private final Action cancelAction;
        
        // Instance Creation -------------------------------------
        
        CommitOrderModel(Order order) {
            super(order);
            validationResultModel = new DefaultValidationResultModel();
            okAction = new OKAction();
            cancelAction = new CancelAction();
        }
        
        
        // Exposing Models -------------------------------------------
        
        ValidationResultModel getValidationResultModel() {
            return validationResultModel;
        }
        
        Action getOKAction() {
            return okAction;
        }
        
        Action getCancelAction() {
            return cancelAction;
        }
        
        
        // Validation ------------------------------------------------
        
        
        private void updateValidationResult() {
            Order order = (Order) getBean();
            ValidationResult result = new OrderValidator(order).validate();
            validationResultModel.setResult(result);
        }
        
        
        // -------------------------------------------------------
        
        /**
         * Commits buffered changes and updates the validation result.
         */
        private final class OKAction extends AbstractAction {
            
            private OKAction() { super("OK"); }
            
            public void actionPerformed(ActionEvent evt) {
                triggerCommit();
                updateValidationResult();
            }
        }
        
        
        /**
         * Flushes buffered changes and updates the validation result.
         */
        private final class CancelAction extends AbstractAction {
            
            private CancelAction() { super("Cancel"); }
            
            public void actionPerformed(ActionEvent evt) {
                triggerFlush();
                updateValidationResult();
            }
        }
        
    }
    
    
}





Error Dialog Example

/*
Code revised from Desktop Java Live:
http://www.sourcebeat.ru/downloads/
*/
import java.awt.event.ActionEvent;
import javax.swing.AbstractAction;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
import com.jgoodies.forms.builder.DefaultFormBuilder;
import com.jgoodies.forms.layout.FormLayout;
public class ErrorDialogExample extends JPanel {
    JTextField nameField;
    JTextField siteField;
    JTextField feedField;
    Feed feed;
    public ErrorDialogExample() {
        DefaultFormBuilder formBuilder = new DefaultFormBuilder(new FormLayout(""));
        formBuilder.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
        formBuilder.appendColumn("right:pref");
        formBuilder.appendColumn("3dlu");
        formBuilder.appendColumn("fill:p:g");
        this.nameField = new JTextField();
        formBuilder.append("Name:", this.nameField);
        this.siteField = new JTextField();
        formBuilder.append("Site Url:", this.siteField);
        this.feedField = new JTextField();
        formBuilder.append("Feed Url:", this.feedField);
        formBuilder.append(new JButton(new ShowFeedInformationAction()), 3);
        createFeed();
        initializeFormElements();
        add(formBuilder.getPanel());
    }
    private void createFeed() {
        this.feed = new Feed();
        this.feed.setName("ClientJava.ru");
        this.feed.setSiteUrl("http://www.clientjava.ru/blog");
        this.feed.setFeedUrl("http://www.clientjava.ru/blog/rss.xml");
    }
    private void initializeFormElements() {
        this.nameField.setText(this.feed.getName());
        this.siteField.setText(this.feed.getSiteUrl());
        this.feedField.setText(this.feed.getFeedUrl());
    }
    private void synchFormAndFeed() {
        this.feed.setName(this.nameField.getText());
        this.feed.setSiteUrl(this.siteField.getText());
        this.feed.setFeedUrl(this.feedField.getText());
    }
    private boolean validateFeed() {
        boolean valid = true;
        if (this.nameField.getText().trim().length() == 0) {
            JOptionPane.showMessageDialog(null, "Name must not be empty.", "Error", JOptionPane.ERROR_MESSAGE);
            valid = false;
        }
        if (this.siteField.getText().trim().length() == 0) {
            JOptionPane.showMessageDialog(null, "Site URL must not be empty.", "Error", JOptionPane.ERROR_MESSAGE);
            valid = false;
        }
        if (this.feedField.getText().trim().length() == 0) {
            JOptionPane.showMessageDialog(null, "Feed URL must not be empty.", "Error", JOptionPane.ERROR_MESSAGE);
            valid = false;
        }
        return valid;
    }
    private Feed getFeed() {
        return this.feed;
    }
    private class ShowFeedInformationAction extends AbstractAction {
        public ShowFeedInformationAction() {
            super("Show Feed Information");
        }
        public void actionPerformed(ActionEvent event) {
            if (validateFeed()) {
                synchFormAndFeed();
                StringBuffer message = new StringBuffer();
                message.append("<html>");
                message.append("<b>Name:</b> ");
                message.append(getFeed().getName());
                message.append("<br>");
                message.append("<b>Site URL:</b> ");
                message.append(getFeed().getSiteUrl());
                message.append("<br>");
                message.append("<b>Feed URL:</b> ");
                message.append(getFeed().getFeedUrl());
                message.append("</html>");
                JOptionPane.showMessageDialog(null, message.toString());
            }
        }
    }
    public static void main(String[] a){
      JFrame f = new JFrame("Error Dialog Example");
      f.setDefaultCloseOperation(2);
      f.add(new ErrorDialogExample());
      f.pack();
      f.setVisible(true);
    }
}





Field List Validator Example

/*
Code revised from Desktop Java Live:
http://www.sourcebeat.ru/downloads/
*/
import java.awt.event.ActionEvent;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.AbstractAction;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
import com.jgoodies.binding.adapter.BasicComponentFactory;
import com.jgoodies.binding.value.ValueModel;
import com.jgoodies.forms.builder.DefaultFormBuilder;
import com.jgoodies.forms.layout.CellConstraints;
import com.jgoodies.forms.layout.FormLayout;
import com.jgoodies.validation.ValidationResult;
import com.jgoodies.validation.util.DefaultValidationResultModel;
import com.jgoodies.validation.util.ValidationResultModel;
import com.jgoodies.validation.view.ValidationResultViewFactory;
public class FieldListValidatorExample extends JPanel {
    private Feed feed;
    private ShowFeedInformationAction showFeedInformationAction;
    private FeedPresentationModel feedPresentationModel;
    private FeedSpecificValidator feedValidator;
    public FieldListValidatorExample() {
        DefaultFormBuilder formBuilder = new DefaultFormBuilder(new FormLayout("right:pref, 3dlu, p:g"));
        formBuilder.setDefaultDialogBorder();
        createFeed();
        this.feedPresentationModel = new FeedPresentationModel(this.feed);
        ValueModel nameModel = this.feedPresentationModel.getFieldModel("name");
        ValueModel feedModel = this.feedPresentationModel.getFieldModel("feedUrl");
        ValueModel siteModel = this.feedPresentationModel.getFieldModel("siteUrl");
        JTextField nameField = BasicComponentFactory.createTextField(nameModel);
        JTextField feedField = BasicComponentFactory.createTextField(feedModel);
        JTextField siteField = BasicComponentFactory.createTextField(siteModel);
        formBuilder.append("Name:", nameField);
        formBuilder.append("Site Url:", siteField);
        formBuilder.append("Feed Url:", feedField);

        this.feedPresentationModel.getValidationModel().addPropertyChangeListener(ValidationResultModel.PROPERTYNAME_RESULT, new ValidationListener());
        this.feedValidator = new FeedSpecificValidator(this.feedPresentationModel);
        JComponent validationResultsComponent = ValidationResultViewFactory.createReportList(this.feedPresentationModel.getValidationModel());
        formBuilder.appendRow("top:30dlu:g");
        CellConstraints cc = new CellConstraints();
        formBuilder.add(validationResultsComponent, cc.xywh(1, formBuilder.getRow() + 1, 3, 1, "fill, fill"));
        formBuilder.nextLine(2);
        formBuilder.append(new JButton(new ValidateAction()), 3);
        this.showFeedInformationAction = new ShowFeedInformationAction();
        formBuilder.append(new JButton(this.showFeedInformationAction), 3);
        add(formBuilder.getPanel());
    }
    private class ValidationListener implements PropertyChangeListener {
        public void propertyChange(PropertyChangeEvent evt) {
            if (evt.getPropertyName() == ValidationResultModel.PROPERTYNAME_RESULT) {
                showFeedInformationAction.setEnabled(!feedPresentationModel.getValidationModel().hasErrors());
            }
        }
    }
    private class ValidateAction extends AbstractAction {
        public ValidateAction() {
            super("Validate");
        }
        public void actionPerformed(ActionEvent e) {
            ValidationResult validationResult = feedValidator.validate();
            feedPresentationModel.setValidationResults(validationResult);
        }
    }
    private class ShowFeedInformationAction extends AbstractAction {
        public ShowFeedInformationAction() {
            super("Show Feed Information");
            setEnabled(false);
        }
        public void actionPerformed(ActionEvent event) {
            StringBuffer message = new StringBuffer();
            message.append("<html>");
            message.append("<b>Name:</b> ");
            message.append(feed.getName());
            message.append("<br>");
            message.append("<b>Site URL:</b> ");
            message.append(feed.getSiteUrl());
            message.append("<br>");
            message.append("<b>Feed URL:</b> ");
            message.append(feed.getFeedUrl());
            message.append("</html>");
            JOptionPane.showMessageDialog(null, message.toString());
        }
    }
    private class FeedPresentationModel extends FieldListModel {
        private ValidationResultModel validationResultModel;
        public FeedPresentationModel(Object bean) {
            super(bean);
            this.validationResultModel = new DefaultValidationResultModel();
        }
        public ValidationResultModel getValidationModel() {
            return this.validationResultModel;
        }

        public void setValidationResults(ValidationResult result) {
            getValidationModel().setResult(result);
        }
    }
    private void createFeed() {
        this.feed = new Feed();
        this.feed.setName("ClientJava.ru");
        this.feed.setSiteUrl("http://www.clientjava.ru/blog");
        this.feed.setFeedUrl("http://www.clientjava.ru/blog/rss.xml");
    }
    public static void main(String[] a){
      JFrame f = new JFrame("Field List Model Validation Example");
      f.setDefaultCloseOperation(2);
      f.add(new FieldListValidatorExample());
      f.pack();
      f.setVisible(true);
    }
}





how to provide input hints

/*
 * Copyright (c) 2003-2005 JGoodies Karsten Lentzsch. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 * 
 *  o Redistributions of source code must retain the above copyright notice, 
 *    this list of conditions and the following disclaimer. 
 *     
 *  o Redistributions in binary form must reproduce the above copyright notice, 
 *    this list of conditions and the following disclaimer in the documentation 
 *    and/or other materials provided with the distribution. 
 *     
 *  o Neither the name of JGoodies Karsten Lentzsch nor the names of 
 *    its contributors may be used to endorse or promote products derived 
 *    from this software without specific prior written permission. 
 *     
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */
package com.jgoodies.validation.tutorial.basics;
import java.awt.ruponent;
import java.awt.KeyboardFocusManager;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.*;
import com.jgoodies.binding.value.ValueHolder;
import com.jgoodies.forms.builder.PanelBuilder;
import com.jgoodies.forms.layout.CellConstraints;
import com.jgoodies.forms.layout.FormLayout;
import com.jgoodies.validation.tutorial.util.ExampleComponentFactory;
import com.jgoodies.validation.tutorial.util.TutorialUtils;
import com.jgoodies.validation.view.ValidationComponentUtils;
import com.jgoodies.validation.view.ValidationResultViewFactory;
/**
 * Demonstrates a style how to provide input hints, 
 * so that users can avoid entering invalid data.
 * 
 * @author Karsten Lentzsch
 * @version $Revision: 1.4 $
 */
public class InfoOnFocusExample {
    private JLabel infoLabel;
    private JTextArea infoArea;
    private JComponent infoAreaPane;
    private JTextField orderNoField;
    private JTextField orderDateField;
    private JTextField deliveryDateField;
    private JTextArea  deliveryNotesArea;
    
    public static void main(String[] args) {
        try {
            UIManager.setLookAndFeel("com.jgoodies.looks.plastic.PlasticXPLookAndFeel");
        } catch (Exception e) {
            // Likely Plastic is not in the classpath; ignore it.
        }
        JFrame frame = new JFrame();
        frame.setTitle("Basics :: Hints on Focus");
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        JComponent panel = new InfoOnFocusExample().buildPanel();
        frame.getContentPane().add(panel);
        frame.pack();
        TutorialUtils.locateOnScreenCenter(frame);
        frame.setVisible(true);
    }
    
    // Component Creation and Initialization **********************************
    /**
     *  Creates and intializes the UI components.
     */
    private void initComponents() {
        orderNoField      = new JTextField();
        orderDateField    = ExampleComponentFactory.createDateField(new ValueHolder());
        deliveryDateField = ExampleComponentFactory.createDateField(new ValueHolder());
        deliveryNotesArea = new JTextArea();
    }
    
    
    private void initComponentAnnotations() {
        ValidationComponentUtils.setInputHint(orderNoField, "Mandatory, length in [5, 10]");
        ValidationComponentUtils.setInputHint(orderDateField, "Mandatory, before delivery date");
        ValidationComponentUtils.setInputHint(deliveryDateField, "After delivery date");
        ValidationComponentUtils.setInputHint(deliveryNotesArea, "Length <= 30");
    }
    
    private void initEventHandling() {
        KeyboardFocusManager.getCurrentKeyboardFocusManager()
                .addPropertyChangeListener(new FocusChangeHandler());
    }
    
    
    // Building ***************************************************************
    /**
     * Builds and returns the whole editor.
     */
    public JComponent buildPanel() {
        initComponents();
        initComponentAnnotations();
        initEventHandling();
        
        FormLayout layout = new FormLayout(
                "fill:default:grow",
                "max(14dlu;pref), 6dlu, pref, 3dlu, pref");
        PanelBuilder builder = new PanelBuilder(layout);
        builder.setDefaultDialogBorder();
        CellConstraints cc = new CellConstraints();
        builder.add(buildInfoAreaPane(), cc.xy(1, 1));
        builder.addSeparator("Order",    cc.xy(1, 3));
        builder.add(buildEditorPanel(),  cc.xy(1, 5));
        return builder.getPanel();
    }
    
    private JComponent buildEditorPanel() {
        FormLayout layout = new FormLayout(
                "right:max(65dlu;pref), 4dlu, 40dlu, 2dlu, 40dlu, 80dlu:grow",
                "p, 3dlu, p, 3dlu, p, 3dlu, p, 2px"); // extra bottom space for icons
        
        layout.setRowGroups(new int[][]{{1, 3, 5, 7}});
        PanelBuilder builder = new PanelBuilder(layout);
        CellConstraints cc = new CellConstraints();
        
        builder.addLabel("Order No",             cc.xy  (1, 1));
        builder.add(orderNoField,                cc.xyw (3, 1, 3));
        builder.addLabel("Order-/Delivery Date", cc.xy  (1, 3));
        builder.add(orderDateField,              cc.xy  (3, 3));
        builder.add(deliveryDateField,           cc.xy  (5, 3));
        builder.addLabel("Notes",                cc.xy  (1, 5));
        builder.add(new JScrollPane(deliveryNotesArea),
                                                 cc.xywh(3, 5, 4, 3));
        return builder.getPanel();
    }

    private JComponent buildInfoAreaPane() {
        infoLabel = new JLabel(ValidationResultViewFactory.getInfoIcon());
        infoArea = new JTextArea(1, 38);
        infoArea.setEditable(false);
        infoArea.setOpaque(false);
        FormLayout layout = new FormLayout("pref, 2dlu, default", "pref");
        PanelBuilder builder = new PanelBuilder(layout);
        CellConstraints cc = new CellConstraints();
        builder.add(infoLabel, cc.xy(1, 1));
        builder.add(infoArea,  cc.xy(3, 1));
        infoAreaPane = builder.getPanel();
        infoAreaPane.setVisible(false);
        return infoAreaPane;
    }

    // Validation Handler *****************************************************
    /**
     * Displays an input hint for components that get the focus permanently.
     */
    private class FocusChangeHandler implements PropertyChangeListener {
        public void propertyChange(PropertyChangeEvent evt) {
            String propertyName = evt.getPropertyName();
            if (!"permanentFocusOwner".equals(propertyName))
                return;
            Component focusOwner = KeyboardFocusManager
                    .getCurrentKeyboardFocusManager().getFocusOwner();
            String focusHint = (focusOwner instanceof JComponent)
                    ? (String) ValidationComponentUtils
                            .getInputHint((JComponent) focusOwner)
                    : null;
            infoArea.setText(focusHint);
            infoAreaPane.setVisible(focusHint != null);
        }
    }
}





Info Assist Example

/*
Code revised from Desktop Java Live:
http://www.sourcebeat.ru/downloads/
*/
import java.awt.ruponent;
import java.awt.KeyboardFocusManager;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import com.jgoodies.forms.builder.DefaultFormBuilder;
import com.jgoodies.forms.layout.FormLayout;
import com.jgoodies.validation.view.ValidationComponentUtils;
import com.jgoodies.validation.view.ValidationResultViewFactory;
public class InfoAssistExample extends JPanel {
    private JLabel infoLabel;
    public InfoAssistExample() {
        DefaultFormBuilder formBuilder = new DefaultFormBuilder(new FormLayout("right:pref, 3dlu, p:g"));
        formBuilder.setDefaultDialogBorder();
        JTextField nameField = new JTextField();
        JTextField feedField = new JTextField();
        JTextField siteField = new JTextField();
        ValidationComponentUtils.setInputHint(nameField, "Enter a name.");
        ValidationComponentUtils.setInputHint(feedField, "Enter a valid rss feed url.");
        ValidationComponentUtils.setInputHint(siteField, "Enter a site url.");
        this.infoLabel = new JLabel();
        this.infoLabel.setIcon(ValidationResultViewFactory.getInfoIcon());
        this.infoLabel.setVisible(false);
        KeyboardFocusManager.getCurrentKeyboardFocusManager().addPropertyChangeListener(new FocusChangeHandler());
        formBuilder.append(this.infoLabel, 3);
        formBuilder.append("Name:", nameField);
        formBuilder.append("Site Url:", siteField);
        formBuilder.append("Feed Url:", feedField);
        add(formBuilder.getPanel());
    }
    private class FocusChangeHandler implements PropertyChangeListener {
        public void propertyChange(PropertyChangeEvent evt) {
            String propertyName = evt.getPropertyName();
            if (!"permanentFocusOwner".equals(propertyName))
                return;
            Component focusOwner = KeyboardFocusManager
                    .getCurrentKeyboardFocusManager().getFocusOwner();
            String focusHint = (focusOwner instanceof JComponent)
                    ? (String) ValidationComponentUtils
                    .getInputHint((JComponent) focusOwner)
                    : null;
            infoLabel.setText(focusHint);
            infoLabel.setVisible(focusHint != null);
        }
    }
    public static void main(String[] a){
      JFrame f = new JFrame("Info Assist Example");
      f.setDefaultCloseOperation(2);
      f.add(new InfoAssistExample());
      f.pack();
      f.setVisible(true);
    }
}





Input Verifier Example

/*
Code revised from Desktop Java Live:
http://www.sourcebeat.ru/downloads/
*/
import javax.swing.BorderFactory;
import javax.swing.InputVerifier;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import com.jgoodies.forms.builder.DefaultFormBuilder;
import com.jgoodies.forms.layout.FormLayout;
public class InputVerifierExample extends JPanel {
    private JLabel validationLabel;
    public InputVerifierExample() {
        DefaultFormBuilder formBuilder = new DefaultFormBuilder(new FormLayout("right:pref, 3dlu, p:g"));
        formBuilder.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
        JTextField javaField = new JTextField();
        JTextField swingField = new JTextField();
        this.validationLabel = new JLabel();
        javaField.setInputVerifier(new StrictInputVerifier("Java"));
        swingField.setInputVerifier(new StrictInputVerifier("Swing"));
        formBuilder.append("Java Field:", javaField);
        formBuilder.append("Swing Field:", swingField);
        formBuilder.appendParagraphGapRow();
        formBuilder.append(validationLabel, 3);
        add(formBuilder.getPanel());
    }
    private class StrictInputVerifier extends InputVerifier {
        private String validString;
        public StrictInputVerifier(String validString) {
            this.validString = validString;
        }
        public boolean verify(JComponent input) {
            JTextField textField = (JTextField) input;
            if (validString.equals(textField.getText())) {
                validationLabel.setText("");
                return true;
            } else {
                validationLabel.setText("Field must only contain " + this.validString);
                return false;
            }
        }
    }
    public static void main(String[] a){
      JFrame f = new JFrame("Input Verifier Example");
      f.setDefaultCloseOperation(2);
      f.add(new InputVerifierExample());
      f.pack();
      f.setVisible(true);
    }
}





Validating Domain Object Example

/*
Code revised from Desktop Java Live:
http://www.sourcebeat.ru/downloads/
*/
import java.awt.event.ActionEvent;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.AbstractAction;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
import com.jgoodies.binding.PresentationModel;
import com.jgoodies.binding.adapter.BasicComponentFactory;
import com.jgoodies.binding.value.ValueModel;
import com.jgoodies.forms.builder.DefaultFormBuilder;
import com.jgoodies.forms.layout.CellConstraints;
import com.jgoodies.forms.layout.FormLayout;
import com.jgoodies.validation.ValidationCapable;
import com.jgoodies.validation.ValidationResult;
import com.jgoodies.validation.util.DefaultValidationResultModel;
import com.jgoodies.validation.util.ValidationResultModel;
import com.jgoodies.validation.util.ValidationUtils;
import com.jgoodies.validation.view.ValidationResultViewFactory;
public class ValidatingDomainObjectExample extends JPanel {
    private Feed feed;
    private ShowFeedInformationAction showFeedInformationAction;
    private FeedPresentationModel feedPresentationModel;
    public ValidatingDomainObjectExample() {
        DefaultFormBuilder formBuilder = new DefaultFormBuilder(new FormLayout("right:pref, 3dlu, p:g"));
        formBuilder.setDefaultDialogBorder();
        createFeed();
        this.feedPresentationModel = new FeedPresentationModel(this.feed);
        ValueModel nameModel = this.feedPresentationModel.getModel("name");
        ValueModel feedModel = this.feedPresentationModel.getModel("feedUrl");
        ValueModel siteModel = this.feedPresentationModel.getModel("siteUrl");
        JTextField nameField = BasicComponentFactory.createTextField(nameModel);
        JTextField feedField = BasicComponentFactory.createTextField(feedModel);
        JTextField siteField = BasicComponentFactory.createTextField(siteModel);
        formBuilder.append("Name:", nameField);
        formBuilder.append("Site Url:", siteField);
        formBuilder.append("Feed Url:", feedField);

        this.feedPresentationModel.getValidationModel().addPropertyChangeListener(ValidationResultModel.PROPERTYNAME_RESULT, new ValidationListener());
        JComponent validationResultsComponent = ValidationResultViewFactory.createReportList(this.feedPresentationModel.getValidationModel());
        formBuilder.appendRow("top:30dlu:g");
        CellConstraints cc = new CellConstraints();
        formBuilder.add(validationResultsComponent, cc.xywh(1, formBuilder.getRow() + 1, 3, 1, "fill, fill"));
        formBuilder.nextLine(2);
        formBuilder.append(new JButton(new ValidateAction()), 3);
        this.showFeedInformationAction = new ShowFeedInformationAction();
        formBuilder.append(new JButton(this.showFeedInformationAction), 3);
        add(formBuilder.getPanel());
    }
    private class ValidationListener implements PropertyChangeListener {
        public void propertyChange(PropertyChangeEvent evt) {
            if (evt.getPropertyName() == ValidationResultModel.PROPERTYNAME_RESULT) {
                showFeedInformationAction.setEnabled(!feedPresentationModel.getValidationModel().hasErrors());
            }
        }
    }
    private void createFeed() {
        this.feed = new Feed();
        this.feed.setName("ClientJava.ru");
        this.feed.setSiteUrl("http://www.clientjava.ru/blog");
        this.feed.setFeedUrl("http://www.clientjava.ru/blog/rss.xml");
    }
    private class ValidateAction extends AbstractAction {
        public ValidateAction() {
            super("Validate");
        }
        public void actionPerformed(ActionEvent e) {
            feedPresentationModel.performValidation();
        }
    }
    private class ShowFeedInformationAction extends AbstractAction {
        public ShowFeedInformationAction() {
            super("Show Feed Information");
            setEnabled(false);
        }
        public void actionPerformed(ActionEvent event) {
            StringBuffer message = new StringBuffer();
            message.append("<html>");
            message.append("<b>Name:</b> ");
            message.append(feed.getName());
            message.append("<br>");
            message.append("<b>Site URL:</b> ");
            message.append(feed.getSiteUrl());
            message.append("<br>");
            message.append("<b>Feed URL:</b> ");
            message.append(feed.getFeedUrl());
            message.append("</html>");
            JOptionPane.showMessageDialog(null, message.toString());
        }
    }
    private class FeedPresentationModel extends PresentationModel {
        private ValidationResultModel validationResultModel;
        public FeedPresentationModel(Object bean) {
            super(bean);
            this.validationResultModel = new DefaultValidationResultModel();
        }
        public ValidationResultModel getValidationModel() {
            return this.validationResultModel;
        }
        public void performValidation() {
            ValidationResult validationResult = ((ValidationCapable) getBean()).validate();
            getValidationModel().setResult(validationResult);
        }
    }
    public class ValidatingFeed extends Feed implements ValidationCapable {
        public ValidationResult validate() {
            ValidationResult validationResult = new ValidationResult();
            String name = getName();
            String feedUrl = getFeedUrl();
            String siteUrl = getSiteUrl();
            if (ValidationUtils.isEmpty(name)) {
                validationResult.addError("The name field can not be blank.");
            } else if (!ValidationUtils.hasBoundedLength(name, 5, 14)) {
                validationResult.addError("The name field must be between 5 and 14 characters.");
            }
            if (!"ClientJava.ru".equals(name)) {
                validationResult.addWarning("This form prefers the feed ClientJava.ru");
            }

            if (ValidationUtils.isEmpty(feedUrl)) {
                validationResult.addError("The feed field can not be blank.");
            }
            if (ValidationUtils.isEmpty(siteUrl)) {
                validationResult.addError("The site field can not be blank.");
            }
            return validationResult;
        }
    }
    public static void main(String[] a){
      JFrame f = new JFrame("Domain Object Validation Example");
      f.setDefaultCloseOperation(2);
      f.add(new ValidatingDomainObjectExample());
      f.pack();
      f.setVisible(true);
    }
}





Validating On Focus Lost Example

/*
Code revised from Desktop Java Live:
http://www.sourcebeat.ru/downloads/
*/
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import com.jgoodies.binding.PresentationModel;
import com.jgoodies.binding.adapter.BasicComponentFactory;
import com.jgoodies.binding.value.ValueModel;
import com.jgoodies.forms.builder.DefaultFormBuilder;
import com.jgoodies.forms.layout.CellConstraints;
import com.jgoodies.forms.layout.FormLayout;
import com.jgoodies.validation.ValidationCapable;
import com.jgoodies.validation.ValidationResult;
import com.jgoodies.validation.util.DefaultValidationResultModel;
import com.jgoodies.validation.util.ValidationResultModel;
import com.jgoodies.validation.util.ValidationUtils;
import com.jgoodies.validation.view.ValidationResultViewFactory;
public class ValidatingOnFocusLostExample extends JPanel {
    private Feed feed;
    private FeedPresentationModel feedPresentationModel;
    public ValidatingOnFocusLostExample() {
        DefaultFormBuilder formBuilder = new DefaultFormBuilder(new FormLayout("right:pref, 3dlu, p:g"));
        formBuilder.setDefaultDialogBorder();
        createFeed();
        this.feedPresentationModel = new FeedPresentationModel(this.feed);
        ValueModel nameModel = this.feedPresentationModel.getModel("name");
        ValueModel feedModel = this.feedPresentationModel.getModel("feedUrl");
        ValueModel siteModel = this.feedPresentationModel.getModel("siteUrl");
        JTextField nameField = BasicComponentFactory.createTextField(nameModel);
        JTextField feedField = BasicComponentFactory.createTextField(feedModel);
        JTextField siteField = BasicComponentFactory.createTextField(siteModel);
        formBuilder.append("Name:", nameField);
        formBuilder.append("Site Url:", siteField);
        formBuilder.append("Feed Url:", feedField);
        JComponent validationResultsComponent = ValidationResultViewFactory.createReportList(this.feedPresentationModel.getValidationModel());
        formBuilder.appendRow("top:30dlu:g");
        CellConstraints cc = new CellConstraints();
        formBuilder.add(validationResultsComponent, cc.xywh(1, formBuilder.getRow() + 1, 3, 1, "fill, fill"));
        add(formBuilder.getPanel());
    }
    private void createFeed() {
        this.feed = new Feed();
        this.feed.setName("ClientJava.ru");
        this.feed.setSiteUrl("http://www.clientjava.ru/blog");
        this.feed.setFeedUrl("http://www.clientjava.ru/blog/rss.xml");
    }
    private class FeedPresentationModel extends PresentationModel implements ValidationCapable {
        private ValidationResultModel validationResultModel;
        public FeedPresentationModel(Object bean) {
            super(bean);
            this.validationResultModel = new DefaultValidationResultModel();
            initEventHandling();
        }
        public ValidationResultModel getValidationModel() {
            return this.validationResultModel;
        }
        public ValidationResult validate() {
            ValidationResult validationResult = new ValidationResult();
            String name = (String) getModel("name").getValue();
            String feedUrl = (String) getModel("feedUrl").getValue();
            String siteUrl = (String) getModel("siteUrl").getValue();
            if (ValidationUtils.isEmpty(name)) {
                validationResult.addError("The name field can not be blank.");
            } else if (!ValidationUtils.hasBoundedLength(name, 5, 14)) {
                validationResult.addError("The name field must be between 5 and 14 characters.");
            }
            if (!"ClientJava.ru".equals(name)) {
                validationResult.addWarning("This form prefers the feed ClientJava.ru");
            }

            if (ValidationUtils.isEmpty(feedUrl)) {
                validationResult.addError("The feed field can not be blank.");
            }
            if (ValidationUtils.isEmpty(siteUrl)) {
                validationResult.addError("The site field can not be blank.");
            }
            return validationResult;
        }
        private void initEventHandling() {
            PropertyChangeListener handler = new ValidationUpdateHandler();
            addBeanPropertyChangeListener(handler);
            getBeanChannel().addValueChangeListener(handler);
        }

        // Event Handling *********************************************************
        class ValidationUpdateHandler implements PropertyChangeListener {
            public void propertyChange(PropertyChangeEvent evt) {
                updateValidationResult();
            }
            private void updateValidationResult() {
                ValidationResult result = validate();
                getValidationModel().setResult(result);
            }
        }
    }
    public static void main(String[] a){
      JFrame f = new JFrame("Validation on Focus Lost Example");
      f.setDefaultCloseOperation(2);
      f.add(new ValidatingOnFocusLostExample());
      f.pack();
      f.setVisible(true);
    }
}





Validating On Key Typed Example

/*
Code revised from Desktop Java Live:
http://www.sourcebeat.ru/downloads/
*/
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import com.jgoodies.binding.PresentationModel;
import com.jgoodies.binding.adapter.BasicComponentFactory;
import com.jgoodies.binding.value.ValueModel;
import com.jgoodies.forms.builder.DefaultFormBuilder;
import com.jgoodies.forms.layout.CellConstraints;
import com.jgoodies.forms.layout.FormLayout;
import com.jgoodies.validation.ValidationCapable;
import com.jgoodies.validation.ValidationResult;
import com.jgoodies.validation.util.DefaultValidationResultModel;
import com.jgoodies.validation.util.ValidationResultModel;
import com.jgoodies.validation.util.ValidationUtils;
import com.jgoodies.validation.view.ValidationResultViewFactory;
public class ValidatingOnKeyTypedExample extends JPanel {
    private Feed feed;
    private FeedPresentationModel feedPresentationModel;
    public ValidatingOnKeyTypedExample() {
        DefaultFormBuilder formBuilder = new DefaultFormBuilder(new FormLayout("right:pref, 3dlu, p:g"));
        formBuilder.setDefaultDialogBorder();
        createFeed();
        this.feedPresentationModel = new FeedPresentationModel(this.feed);
        ValueModel nameModel = this.feedPresentationModel.getModel("name");
        ValueModel feedModel = this.feedPresentationModel.getModel("feedUrl");
        ValueModel siteModel = this.feedPresentationModel.getModel("siteUrl");
        JTextField nameField = BasicComponentFactory.createTextField(nameModel, false);
        JTextField feedField = BasicComponentFactory.createTextField(feedModel, false);
        JTextField siteField = BasicComponentFactory.createTextField(siteModel, false);
        formBuilder.append("Name:", nameField);
        formBuilder.append("Site Url:", siteField);
        formBuilder.append("Feed Url:", feedField);
        JComponent validationResultsComponent = ValidationResultViewFactory.createReportList(this.feedPresentationModel.getValidationModel());
        formBuilder.appendRow("top:30dlu:g");
        CellConstraints cc = new CellConstraints();
        formBuilder.add(validationResultsComponent, cc.xywh(1, formBuilder.getRow() + 1, 3, 1, "fill, fill"));
        add(formBuilder.getPanel());
    }
    private void createFeed() {
        this.feed = new Feed();
        this.feed.setName("ClientJava.ru");
        this.feed.setSiteUrl("http://www.clientjava.ru/blog");
        this.feed.setFeedUrl("http://www.clientjava.ru/blog/rss.xml");
    }
    private class FeedPresentationModel extends PresentationModel implements ValidationCapable {
        private ValidationResultModel validationResultModel;
        public FeedPresentationModel(Object bean) {
            super(bean);
            this.validationResultModel = new DefaultValidationResultModel();
            initEventHandling();
        }
        public ValidationResultModel getValidationModel() {
            return this.validationResultModel;
        }
        public ValidationResult validate() {
            ValidationResult validationResult = new ValidationResult();
            String name = (String) getModel("name").getValue();
            String feedUrl = (String) getModel("feedUrl").getValue();
            String siteUrl = (String) getModel("siteUrl").getValue();
            if (ValidationUtils.isEmpty(name)) {
                validationResult.addError("The name field can not be blank.");
            } else if (!ValidationUtils.hasBoundedLength(name, 5, 14)) {
                validationResult.addError("The name field must be between 5 and 14 characters.");
            }
            if (!"ClientJava.ru".equals(name)) {
                validationResult.addWarning("This form prefers the feed ClientJava.ru");
            }

            if (ValidationUtils.isEmpty(feedUrl)) {
                validationResult.addError("The feed field can not be blank.");
            }
            if (ValidationUtils.isEmpty(siteUrl)) {
                validationResult.addError("The site field can not be blank.");
            }
            return validationResult;
        }
        private void initEventHandling() {
            PropertyChangeListener handler = new ValidationUpdateHandler();
            addBeanPropertyChangeListener(handler);
            getBeanChannel().addValueChangeListener(handler);
        }

        // Event Handling *********************************************************
        class ValidationUpdateHandler implements PropertyChangeListener {
            public void propertyChange(PropertyChangeEvent evt) {
                updateValidationResult();
            }
            private void updateValidationResult() {
                ValidationResult result = validate();
                getValidationModel().setResult(result);
            }

        }
    }
    public static void main(String[] a){
      JFrame f = new JFrame("Validation on Key Typed Example");
      f.setDefaultCloseOperation(2);
      f.add(new ValidatingOnKeyTypedExample());
      f.pack();
      f.setVisible(true);
    }
}





Validating Presentation Model Example

/*
Code revised from Desktop Java Live:
http://www.sourcebeat.ru/downloads/
*/
import java.awt.event.ActionEvent;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.AbstractAction;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
import com.jgoodies.binding.PresentationModel;
import com.jgoodies.binding.adapter.BasicComponentFactory;
import com.jgoodies.binding.value.ValueModel;
import com.jgoodies.forms.builder.DefaultFormBuilder;
import com.jgoodies.forms.layout.CellConstraints;
import com.jgoodies.forms.layout.FormLayout;
import com.jgoodies.validation.ValidationCapable;
import com.jgoodies.validation.ValidationResult;
import com.jgoodies.validation.util.DefaultValidationResultModel;
import com.jgoodies.validation.util.ValidationResultModel;
import com.jgoodies.validation.util.ValidationUtils;
import com.jgoodies.validation.view.ValidationResultViewFactory;
public class ValidatingPresentationModelExample extends JPanel {
    private Feed feed;
    private ShowFeedInformationAction showFeedInformationAction;
    private FeedPresentationModel feedPresentationModel;
    public ValidatingPresentationModelExample() {
        DefaultFormBuilder formBuilder = new DefaultFormBuilder(new FormLayout("right:pref, 3dlu, p:g"));
        formBuilder.setDefaultDialogBorder();
        createFeed();
        this.feedPresentationModel = new FeedPresentationModel(this.feed);
        ValueModel nameModel = this.feedPresentationModel.getModel("name");
        ValueModel feedModel = this.feedPresentationModel.getModel("feedUrl");
        ValueModel siteModel = this.feedPresentationModel.getModel("siteUrl");
        JTextField nameField = BasicComponentFactory.createTextField(nameModel);
        JTextField feedField = BasicComponentFactory.createTextField(feedModel);
        JTextField siteField = BasicComponentFactory.createTextField(siteModel);
        formBuilder.append("Name:", nameField);
        formBuilder.append("Site Url:", siteField);
        formBuilder.append("Feed Url:", feedField);

        this.feedPresentationModel.getValidationModel().addPropertyChangeListener(ValidationResultModel.PROPERTYNAME_RESULT, new ValidationListener());
        JComponent validationResultsComponent = ValidationResultViewFactory.createReportList(this.feedPresentationModel.getValidationModel());
        formBuilder.appendRow("top:30dlu:g");
        CellConstraints cc = new CellConstraints();
        formBuilder.add(validationResultsComponent, cc.xywh(1, formBuilder.getRow() + 1, 3, 1, "fill, fill"));
        formBuilder.nextLine(2);
        formBuilder.append(new JButton(new ValidateAction()), 3);
        this.showFeedInformationAction = new ShowFeedInformationAction();
        formBuilder.append(new JButton(this.showFeedInformationAction), 3);
        add(formBuilder.getPanel());
    }
    private class ValidationListener implements PropertyChangeListener {
        public void propertyChange(PropertyChangeEvent evt) {
            if (evt.getPropertyName() == ValidationResultModel.PROPERTYNAME_RESULT) {
                showFeedInformationAction.setEnabled(!feedPresentationModel.getValidationModel().hasErrors());
            }
        }
    }
    private void createFeed() {
        this.feed = new Feed();
        this.feed.setName("ClientJava.ru");
        this.feed.setSiteUrl("http://www.clientjava.ru/blog");
        this.feed.setFeedUrl("http://www.clientjava.ru/blog/rss.xml");
    }
    private class ValidateAction extends AbstractAction {
        public ValidateAction() {
            super("Validate");
        }
        public void actionPerformed(ActionEvent e) {
            feedPresentationModel.performValidation();
        }
    }
    private class ShowFeedInformationAction extends AbstractAction {
        public ShowFeedInformationAction() {
            super("Show Feed Information");
            setEnabled(false);
        }
        public void actionPerformed(ActionEvent event) {
            StringBuffer message = new StringBuffer();
            message.append("<html>");
            message.append("<b>Name:</b> ");
            message.append(feed.getName());
            message.append("<br>");
            message.append("<b>Site URL:</b> ");
            message.append(feed.getSiteUrl());
            message.append("<br>");
            message.append("<b>Feed URL:</b> ");
            message.append(feed.getFeedUrl());
            message.append("</html>");
            JOptionPane.showMessageDialog(null, message.toString());
        }
    }
    private class FeedPresentationModel extends PresentationModel implements ValidationCapable {
        private ValidationResultModel validationResultModel;
        public FeedPresentationModel(Object bean) {
            super(bean);
            this.validationResultModel = new DefaultValidationResultModel();
        }
        public ValidationResultModel getValidationModel() {
            return this.validationResultModel;
        }
        public ValidationResult validate() {
            ValidationResult validationResult = new ValidationResult();
            String name = (String) getModel("name").getValue();
            String feedUrl = (String) getModel("feedUrl").getValue();
            String siteUrl = (String) getModel("siteUrl").getValue();
            if (ValidationUtils.isEmpty(name)) {
                validationResult.addError("The name field can not be blank.");
            } else if (!ValidationUtils.hasBoundedLength(name, 5, 14)) {
                validationResult.addError("The name field must be between 5 and 14 characters.");
            }
            if (!"ClientJava.ru".equals(name)) {
                validationResult.addWarning("This form prefers the feed ClientJava.ru");
            }

            if (ValidationUtils.isEmpty(feedUrl)) {
                validationResult.addError("The feed field can not be blank.");
            }
            if (ValidationUtils.isEmpty(siteUrl)) {
                validationResult.addError("The site field can not be blank.");
            }
            return validationResult;
        }
        public void performValidation() {
            ValidationResult validationResult = validate();
            getValidationModel().setResult(validationResult);
        }
    }
    public static void main(String[] a){
      JFrame f = new JFrame("Presentation Model Validation Example");
      f.setDefaultCloseOperation(2);
      f.add(new ValidatingPresentationModelExample());
      f.pack();
      f.setVisible(true);
    }
}





Validation How to Example

/*
Code revised from Desktop Java Live:
http://www.sourcebeat.ru/downloads/
*/
import java.awt.event.ActionEvent;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.AbstractAction;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
import com.jgoodies.forms.builder.DefaultFormBuilder;
import com.jgoodies.forms.layout.CellConstraints;
import com.jgoodies.forms.layout.FormLayout;
import com.jgoodies.validation.ValidationResult;
import com.jgoodies.validation.util.DefaultValidationResultModel;
import com.jgoodies.validation.util.ValidationResultModel;
import com.jgoodies.validation.util.ValidationUtils;
import com.jgoodies.validation.view.ValidationResultViewFactory;
public class ValidationHowExample extends JPanel {
    private JTextField nameField;
    private JTextField siteField;
    private JTextField feedField;
    private Feed feed;
    private ValidationResultModel validationResultModel;
    private ShowFeedInformationAction showFeedInformationAction;
    public ValidationHowExample() {
        DefaultFormBuilder formBuilder = new DefaultFormBuilder(new FormLayout(""));
        formBuilder.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
        formBuilder.appendColumn("right:pref");
        formBuilder.appendColumn("3dlu");
        formBuilder.appendColumn("fill:p:g");
        this.nameField = new JTextField();
        formBuilder.append("Name:", this.nameField);
        this.siteField = new JTextField();
        formBuilder.append("Site Url:", this.siteField);
        this.feedField = new JTextField();
        formBuilder.append("Feed Url:", this.feedField);
        this.validationResultModel = new DefaultValidationResultModel();
        this.validationResultModel.addPropertyChangeListener(new ValidationListener());
        JComponent validationResultsComponent = ValidationResultViewFactory.createReportList(validationResultModel);
        formBuilder.appendRow("top:30dlu:g");
        CellConstraints cc = new CellConstraints();
        formBuilder.add(validationResultsComponent, cc.xywh(1, formBuilder.getRow() + 1, 3, 1, "fill, fill"));
        formBuilder.nextLine(2);
        formBuilder.append(new JButton(new ValidateAction()), 3);
        this.showFeedInformationAction = new ShowFeedInformationAction();
        formBuilder.append(new JButton(this.showFeedInformationAction), 3);
        createFeed();
        initializeFormElements();
        add(formBuilder.getPanel());
    }
    private ValidationResult validateIt() {
        ValidationResult validationResult = new ValidationResult();
        if (ValidationUtils.isEmpty(this.nameField.getText())) {
            validationResult.addError("The name field can not be blank.");
        } else if (!ValidationUtils.hasBoundedLength(this.nameField.getText(), 5, 14)) {
            validationResult.addError("The name field must be between 5 and 14 characters.");
        }
        if (!"ClientJava.ru".equals(this.nameField.getText())) {
            validationResult.addWarning("This form prefers the feed ClientJava.ru");
        }

        if (ValidationUtils.isEmpty(this.feedField.getText())) {
            validationResult.addError("The feed field can not be blank.");
        }
        if (ValidationUtils.isEmpty(this.siteField.getText())) {
            validationResult.addError("The site field can not be blank.");
        }
        return validationResult;
    }
    private class ValidationListener implements PropertyChangeListener {
        public void propertyChange(PropertyChangeEvent evt) {
            if (evt.getPropertyName() == ValidationResultModel.PROPERTYNAME_RESULT) {
                JOptionPane.showMessageDialog(null, "Validation has been performed");
                showFeedInformationAction.setEnabled(!validationResultModel.hasErrors());
            } else if (evt.getPropertyName() == ValidationResultModel.PROPERTYNAME_MESSAGES) {
                if (Boolean.TRUE.equals(evt.getNewValue())) {
                    JOptionPane.showMessageDialog(null, "Messages have been found.");
                }
            }
        }
    }
    private Feed getFeed() {
        return this.feed;
    }
    private void createFeed() {
        this.feed = new Feed();
        this.feed.setName("ClientJava.ru");
        this.feed.setSiteUrl("http://www.clientjava.ru/blog");
        this.feed.setFeedUrl("http://www.clientjava.ru/blog/rss.xml");
    }
    private void initializeFormElements() {
        this.nameField.setText(this.feed.getName());
        this.siteField.setText(this.feed.getSiteUrl());
        this.feedField.setText(this.feed.getFeedUrl());
    }
    private void synchFormAndFeed() {
        this.feed.setName(this.nameField.getText());
        this.feed.setSiteUrl(this.siteField.getText());
        this.feed.setFeedUrl(this.feedField.getText());
    }
    private class ValidateAction extends AbstractAction {
        public ValidateAction() {
            super("Validate");
        }
        public void actionPerformed(ActionEvent e) {
            synchFormAndFeed();
            ValidationResult validationResult = validateIt();
            validationResultModel.setResult(validationResult);
        }
    }
    private class ShowFeedInformationAction extends AbstractAction {
        public ShowFeedInformationAction() {
            super("Show Feed Information");
            setEnabled(false);
        }
        public void actionPerformed(ActionEvent event) {
            StringBuffer message = new StringBuffer();
            message.append("<html>");
            message.append("<b>Name:</b> ");
            message.append(getFeed().getName());
            message.append("<br>");
            message.append("<b>Site URL:</b> ");
            message.append(getFeed().getSiteUrl());
            message.append("<br>");
            message.append("<b>Feed URL:</b> ");
            message.append(getFeed().getFeedUrl());
            message.append("</html>");
            JOptionPane.showMessageDialog(null, message.toString());
        }
    }
    public static void main(String[] a){
      JFrame f = new JFrame("How To Validate Example");
      f.setDefaultCloseOperation(2);
      f.add(new ValidationHowExample());
      f.pack();
      f.setVisible(true);
    }
}





Validation Icons Example

/*
Code revised from Desktop Java Live:
http://www.sourcebeat.ru/downloads/
*/
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import com.jgoodies.forms.builder.DefaultFormBuilder;
import com.jgoodies.forms.layout.FormLayout;
import com.jgoodies.validation.Severity;
import com.jgoodies.validation.view.ValidationResultViewFactory;
public class ValidationIconsExample extends JPanel {
    public ValidationIconsExample() {
        DefaultFormBuilder formBuilder = new DefaultFormBuilder(new FormLayout("right:pref, 3dlu, p:g"));
        formBuilder.setDefaultDialogBorder();
        formBuilder.append("Check Icon", new JLabel(ValidationResultViewFactory.getCheckIcon()));
        formBuilder.appendSeparator();
        formBuilder.append("Error Icon", new JLabel(ValidationResultViewFactory.getErrorIcon()));
        formBuilder.appendSeparator();
        formBuilder.append("Info Icon", new JLabel(ValidationResultViewFactory.getInfoIcon()));
        formBuilder.appendSeparator();
        formBuilder.append("Warning Icon", new JLabel(ValidationResultViewFactory.getWarningIcon()));
        formBuilder.appendSeparator();
        formBuilder.append("Severity.ERROR Icon", new JLabel(ValidationResultViewFactory.getIcon(Severity.ERROR)));
        formBuilder.appendSeparator();
        formBuilder.append("Small Error Icon", new JLabel(ValidationResultViewFactory.getSmallErrorIcon()));
        formBuilder.appendSeparator();
        formBuilder.append("Small Info Icon", new JLabel(ValidationResultViewFactory.getSmallInfoIcon()));
        formBuilder.appendSeparator();
        formBuilder.append("Small Warning Icon", new JLabel(ValidationResultViewFactory.getSmallWarningIcon()));
        formBuilder.appendSeparator();
        formBuilder.append("Small Severity.ERROR Icon", new JLabel(ValidationResultViewFactory.getSmallIcon(Severity.ERROR)));
        add(formBuilder.getPanel());
    }
    public static void main(String[] a){
      JFrame f = new JFrame("Validation Icons Example");
      f.setDefaultCloseOperation(2);
      f.add(new ValidationIconsExample());
      f.pack();
      f.setVisible(true);
    }
}





Validation Results View Example

/*
Code revised from Desktop Java Live:
http://www.sourcebeat.ru/downloads/
*/
import java.awt.Color;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import com.jgoodies.forms.builder.PanelBuilder;
import com.jgoodies.forms.layout.CellConstraints;
import com.jgoodies.forms.layout.FormLayout;
import com.jgoodies.validation.ValidationResult;
import com.jgoodies.validation.util.DefaultValidationResultModel;
import com.jgoodies.validation.util.ValidationResultModel;
import com.jgoodies.validation.view.ValidationResultViewFactory;
public class ValidationResultsViewExample extends JPanel {
    private ValidationResultModel validationResultModel;
    public ValidationResultsViewExample() {
        PanelBuilder panelBuilder = new PanelBuilder(new FormLayout("right:pref, 3dlu, p:g"));
        panelBuilder.setDefaultDialogBorder();
        this.validationResultModel = new DefaultValidationResultModel();
        CellConstraints cc = new CellConstraints();
        JPanel panel = new JPanel();
        panel.setLayout(new GridLayout(1, 4));
        panel.add(new JButton(new SetValidationResults("Empty")));
        panel.add(new JButton(new SetValidationResults("Errors")));
        panel.add(new JButton(new SetValidationResults("Warnings")));
        panel.add(new JButton(new SetValidationResults("Mixed")));
        panelBuilder.appendRow("t:30dlu");
        panelBuilder.add(panel, cc.xywh(1, panelBuilder.getRow(), 3, 1));
        panelBuilder.nextLine();
        panelBuilder.appendRow("t:30dlu");
        panelBuilder.addLabel("Icon and Text Label", cc.xy(1, panelBuilder.getRow()));
        panelBuilder.add(ValidationResultViewFactory.createReportIconAndTextLabel(this.validationResultModel), cc.xy(3, panelBuilder.getRow()));
        panelBuilder.nextLine();
        panelBuilder.appendRow("2dlu");
        panelBuilder.nextLine();
        panelBuilder.appendRow("t:30dlu");
        panelBuilder.addLabel("Icon and TextPane", cc.xy(1, panelBuilder.getRow()));
        panelBuilder.add(ValidationResultViewFactory.createReportIconAndTextPane(this.validationResultModel), cc.xy(3, panelBuilder.getRow()));
        panelBuilder.nextLine();
        panelBuilder.appendRow("2dlu");
        panelBuilder.nextLine();
        panelBuilder.appendRow("t:30dlu");
        panelBuilder.addLabel("Icon Label", cc.xy(1, panelBuilder.getRow()));
        panelBuilder.add(ValidationResultViewFactory.createReportIconLabel(this.validationResultModel), cc.xy(3, panelBuilder.getRow()));
        panelBuilder.nextLine();
        panelBuilder.appendRow("2dlu");
        panelBuilder.nextLine();
        panelBuilder.appendRow("t:30dlu");
        panelBuilder.addLabel("Report List", cc.xy(1, panelBuilder.getRow()));
        panelBuilder.add(ValidationResultViewFactory.createReportList(this.validationResultModel), cc.xy(3, panelBuilder.getRow()));
        panelBuilder.nextLine();
        panelBuilder.appendRow("2dlu");
        panelBuilder.nextLine();
        panelBuilder.appendRow("t:30dlu");
        panelBuilder.addLabel("Report List with Color", cc.xy(1, panelBuilder.getRow()));
        panelBuilder.add(ValidationResultViewFactory.createReportList(this.validationResultModel, Color.white), cc.xy(3, panelBuilder.getRow()));
        panelBuilder.nextLine();
        panelBuilder.appendRow("2dlu");
        panelBuilder.nextLine();
        panelBuilder.appendRow("t:30dlu");
        panelBuilder.addLabel("Text Area", cc.xy(1, panelBuilder.getRow()));
        panelBuilder.add(ValidationResultViewFactory.createReportTextArea(this.validationResultModel), cc.xy(3, panelBuilder.getRow()));
        panelBuilder.nextLine();
        panelBuilder.appendRow("2dlu");
        panelBuilder.nextLine();
        panelBuilder.appendRow("t:30dlu");
        panelBuilder.addLabel("Text Area with Color", cc.xy(1, panelBuilder.getRow()));
        panelBuilder.add(ValidationResultViewFactory.createReportTextArea(this.validationResultModel, Color.white), cc.xy(3, panelBuilder.getRow()));
        panelBuilder.nextLine();
        panelBuilder.appendRow("2dlu");
        panelBuilder.nextLine();
        panelBuilder.appendRow("t:30dlu");
        panelBuilder.addLabel("Text Pane", cc.xy(1, panelBuilder.getRow()));
        panelBuilder.add(ValidationResultViewFactory.createReportTextPane(this.validationResultModel), cc.xy(3, panelBuilder.getRow()));
        panelBuilder.nextLine();
        panelBuilder.appendRow("2dlu");
        panelBuilder.nextLine();
        panelBuilder.appendRow("t:30dlu");
        panelBuilder.addLabel("Text Pane with Color", cc.xy(1, panelBuilder.getRow()));
        panelBuilder.add(ValidationResultViewFactory.createReportTextPane(this.validationResultModel, Color.white), cc.xy(3, panelBuilder.getRow()));
        panelBuilder.nextLine();
        add(panelBuilder.getPanel());
    }
    private class SetValidationResults extends AbstractAction {
        public SetValidationResults(String name) {
            super(name);
        }
        public void actionPerformed(ActionEvent e) {
            if ("Errors".equals(this.getValue(Action.NAME))) {
                validationResultModel.setResult(createErrorResult());
            } else if ("Mixed".equals(this.getValue(Action.NAME))) {
                validationResultModel.setResult(createMixedResult());
            } else if ("Warnings".equals(this.getValue(Action.NAME))) {
                validationResultModel.setResult(createWarningResult());
            } else if ("Empty".equals(this.getValue(Action.NAME))) {
                validationResultModel.setResult(createEmptyResult());
            }
        }
    }
    private ValidationResult createEmptyResult() {
        return ValidationResult.EMPTY;
    }
    private ValidationResult createErrorResult() {
        ValidationResult validationResult = new ValidationResult();
        validationResult.addError("Error message one.");
        validationResult.addError("Error message two.");
        validationResult.addError("Error message three.");
        return validationResult;
    }
    private ValidationResult createWarningResult() {
        ValidationResult validationResult = new ValidationResult();
        validationResult.addWarning("Warning message one.");
        validationResult.addWarning("Warning message two.");
        validationResult.addWarning("Warning message three.");
        return validationResult;
    }
    private ValidationResult createMixedResult() {
        ValidationResult validationResult = new ValidationResult();
        validationResult.addError("Error message one.");
        validationResult.addWarning("Warning message one.");
        validationResult.addWarning("Warning message two.");
        validationResult.addError("Error message two.");
        validationResult.addError("Error message three.");
        validationResult.addWarning("Warning message three.");
        return validationResult;
    }
    public static void main(String[] a){
      JFrame f = new JFrame("Validation Results View Example");
      f.setDefaultCloseOperation(2);
      f.add(new ValidationResultsViewExample());
      f.pack();
      f.setVisible(true);
    }
}