Java by API/javax.swing/SwingUtilities

SwingUtilities: convertPointFromScreen(Point p, Component c)

  
    
import java.awt.Point;
import javax.swing.JButton;
import javax.swing.SwingUtilities;
public class Main {
  public static void main(String[] argv) {
    JButton component = new JButton();
    Point pt = new Point(component.getLocation());
    SwingUtilities.convertPointFromScreen(pt, component);
  }
}

SwingUtilities: convertPointToScreen(Point p, Component c)

  

import java.awt.Point;
import javax.swing.JButton;
import javax.swing.SwingUtilities;
public class Main {
  public static void main(String[] argv) {

    JButton component = new JButton();
    Point pt = new Point(component.getLocation());
    SwingUtilities.convertPointToScreen(pt, component);
  }
}

SwingUtilities: getRoot(Component c)

  
 
import java.awt.Color;
import java.awt.ruponent;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
public class Main extends JFrame {
  public Main() {
    this.setSize(400, 100);
    this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    this.setLayout(new FlowLayout(FlowLayout.CENTER));
    JButton button = new JButton("Change Frame Color");
    button.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        Component component = (Component) e.getSource();
        JFrame frame = (JFrame) SwingUtilities.getRoot(component);
        frame.setBackground(Color.RED);
      }
    });
    this.getContentPane().add(button);
  }
  public static void main(String[] args) {
    new Main().setVisible(true);
  }
}

SwingUtilities: getWindowAncestor(Component c)

  
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
public class Main {
  public static void main(String[] a) {
    JPanel panel = new JPanel();
    JDialog dialog = new JDialog((JFrame) SwingUtilities.getWindowAncestor(panel), true);
  }
}

SwingUtilities: invokeAndWait(Runnable run)

  
import java.awt.ruponent;
import java.awt.Graphics;
import javax.swing.Icon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
public class MainClass extends JPanel {
  public MainClass() {
    try {
      SwingUtilities.invokeAndWait(new Runnable() {
        public void run() {
          JLabel jl = new JLabel(new MyIcon(), JLabel.CENTER);
          add(jl);
        }
      });
    } catch (Exception exc) {
      System.out.println("Can"t create because of " + exc);
    }
  }
  public static void main(String[] args) {
    JFrame frame = new JFrame();
    frame.getContentPane().add(new MainClass());
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(200, 200);
    frame.setVisible(true);
  }
}

SwingUtilities.invokeLater(Runnable doRun)

  
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
public class InvokeExample {
  private static JButton good = new JButton("Good");
  private static JButton bad = new JButton("Bad");
  private static JButton bad2 = new JButton("Bad2");
  private static JLabel resultLabel = new JLabel("Ready", JLabel.CENTER);
  public static void main(String[] args) {
    JFrame f = new JFrame();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JPanel p = new JPanel();
    p.add(good);
    p.add(bad);
    p.add(bad2);
    Container c = f.getContentPane();
    c.setLayout(new BorderLayout());
    c.add(p, BorderLayout.CENTER);
    c.add(resultLabel, BorderLayout.SOUTH);
    good.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent ev) {
        resultLabel.setText("Working . . .");
        setEnabled(false);
        Thread worker = new Thread() {
          public void run() {
            try {
              Thread.sleep(5000);
            } catch (InterruptedException ex) {
            }
            SwingUtilities.invokeLater(new Runnable() {
              public void run() {
                resultLabel.setText("Ready");
                setEnabled(true);
              }
            });
          }
        };
        worker.start();
      }
    });
    bad.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent ev) {
        resultLabel.setText("Working . . .");
        setEnabled(false);
        try {
          Thread.sleep(5000);
        } catch (InterruptedException ex) {
        }
        resultLabel.setText("Ready");
        setEnabled(true);
      }
    });
    bad2.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent ev) {
        resultLabel.setText("Working . . . ");
        setEnabled(false);
        SwingUtilities.invokeLater(new Runnable() {
          public void run() {
            try {
              Thread.sleep(5000); // Dispatch thread is starving!
            } catch (InterruptedException ex) {
            }
            resultLabel.setText("Ready");
            setEnabled(true);
          }
        });
      }
    });
    f.setSize(300, 100);
    f.setVisible(true);
  }
  // Allows us to turn the buttons on or off while we work.
  static void setEnabled(boolean b) {
    good.setEnabled(b);
    bad.setEnabled(b);
    bad2.setEnabled(b);
  }
}

SwingUtilities.isEventDispatchThread()

  

/*
 * Copyright (c) 2007, Romain Guy
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * 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.
 *   * Neither the name of the TimingFramework project 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.
 */
import java.awt.*;
import javax.swing.*;

/**
 * @author Romain Guy
 */
public class SafeRepaint extends JFrame {
    private SafeComponent safeComponent;
    public SafeRepaint() {
        super("Safe Repaint");
        safeComponent = new SafeComponent();
        add(safeComponent);
        pack();
        setLocationRelativeTo(null);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        new Thread(new Runnable() {
            public void run() {
                while (true) {
                    safeComponent.repaint();
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                    }
                }
            }
        }).start();
    }
    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                SafeRepaint repaint = new SafeRepaint();
                repaint.setVisible(true);
            }
        });
    }
}
/*
 * Copyright (c) 2007, Romain Guy
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * 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.
 *   * Neither the name of the TimingFramework project 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.
 */

/**
 * @author Romain Guy
 */
class SafeComponent extends JLabel {
    public SafeComponent() {
        super("Safe Repaint");
    }
    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        System.out.println(SwingUtilities.isEventDispatchThread());
    }
}

SwingUtilities.isLeftMouseButton(MouseEvent mouseEvent)

  
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.InputEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
public class MainClass {
  public static void main(String args[]) {
    JFrame frame = new JFrame("Button Sample");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JButton button = new JButton("Select Me");
    ActionListener actionListener = new ActionListener() {
      public void actionPerformed(ActionEvent actionEvent) {
        System.out.println("I was selected.");
      }
    };
    MouseListener mouseListener = new MouseAdapter() {
      public void mousePressed(MouseEvent mouseEvent) {
        int modifiers = mouseEvent.getModifiers();
        if ((modifiers & InputEvent.BUTTON1_MASK) == InputEvent.BUTTON1_MASK) {
          System.out.println("Left button pressed.");
        }
        if ((modifiers & InputEvent.BUTTON2_MASK) == InputEvent.BUTTON2_MASK) {
          System.out.println("Middle button pressed.");
        }
        if ((modifiers & InputEvent.BUTTON3_MASK) == InputEvent.BUTTON3_MASK) {
          System.out.println("Right button pressed.");
        }
      }
      public void mouseReleased(MouseEvent mouseEvent) {
        if (SwingUtilities.isLeftMouseButton(mouseEvent)) {
          System.out.println("Left button released.");
        }
        if (SwingUtilities.isMiddleMouseButton(mouseEvent)) {
          System.out.println("Middle button released.");
        }
        if (SwingUtilities.isRightMouseButton(mouseEvent)) {
          System.out.println("Right button released.");
        }
        System.out.println();
      }
    };
    button.addActionListener(actionListener);
    button.addMouseListener(mouseListener);
    frame.add(button, BorderLayout.SOUTH);
    frame.setSize(300, 100);
    frame.setVisible(true);
  }
}

SwingUtilities.isMiddleMouseButton(MouseEvent mouseEvent)

  
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.InputEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
public class MainClass {
  public static void main(String args[]) {
    JFrame frame = new JFrame("Button Sample");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JButton button = new JButton("Select Me");
    ActionListener actionListener = new ActionListener() {
      public void actionPerformed(ActionEvent actionEvent) {
        System.out.println("I was selected.");
      }
    };
    MouseListener mouseListener = new MouseAdapter() {
      public void mousePressed(MouseEvent mouseEvent) {
        int modifiers = mouseEvent.getModifiers();
        if ((modifiers & InputEvent.BUTTON1_MASK) == InputEvent.BUTTON1_MASK) {
          System.out.println("Left button pressed.");
        }
        if ((modifiers & InputEvent.BUTTON2_MASK) == InputEvent.BUTTON2_MASK) {
          System.out.println("Middle button pressed.");
        }
        if ((modifiers & InputEvent.BUTTON3_MASK) == InputEvent.BUTTON3_MASK) {
          System.out.println("Right button pressed.");
        }
      }
      public void mouseReleased(MouseEvent mouseEvent) {
        if (SwingUtilities.isLeftMouseButton(mouseEvent)) {
          System.out.println("Left button released.");
        }
        if (SwingUtilities.isMiddleMouseButton(mouseEvent)) {
          System.out.println("Middle button released.");
        }
        if (SwingUtilities.isRightMouseButton(mouseEvent)) {
          System.out.println("Right button released.");
        }
        System.out.println();
      }
    };
    button.addActionListener(actionListener);
    button.addMouseListener(mouseListener);
    frame.add(button, BorderLayout.SOUTH);
    frame.setSize(300, 100);
    frame.setVisible(true);
  }
}

SwingUtilities.isRightMouseButton(MouseEvent mouseEvent)

  
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.InputEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
public class MainClass {
  public static void main(String args[]) {
    JFrame frame = new JFrame("Button Sample");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JButton button = new JButton("Select Me");
    ActionListener actionListener = new ActionListener() {
      public void actionPerformed(ActionEvent actionEvent) {
        System.out.println("I was selected.");
      }
    };
    MouseListener mouseListener = new MouseAdapter() {
      public void mousePressed(MouseEvent mouseEvent) {
        int modifiers = mouseEvent.getModifiers();
        if ((modifiers & InputEvent.BUTTON1_MASK) == InputEvent.BUTTON1_MASK) {
          System.out.println("Left button pressed.");
        }
        if ((modifiers & InputEvent.BUTTON2_MASK) == InputEvent.BUTTON2_MASK) {
          System.out.println("Middle button pressed.");
        }
        if ((modifiers & InputEvent.BUTTON3_MASK) == InputEvent.BUTTON3_MASK) {
          System.out.println("Right button pressed.");
        }
      }
      public void mouseReleased(MouseEvent mouseEvent) {
        if (SwingUtilities.isLeftMouseButton(mouseEvent)) {
          System.out.println("Left button released.");
        }
        if (SwingUtilities.isMiddleMouseButton(mouseEvent)) {
          System.out.println("Middle button released.");
        }
        if (SwingUtilities.isRightMouseButton(mouseEvent)) {
          System.out.println("Right button released.");
        }
        System.out.println();
      }
    };
    button.addActionListener(actionListener);
    button.addMouseListener(mouseListener);
    frame.add(button, BorderLayout.SOUTH);
    frame.setSize(300, 100);
    frame.setVisible(true);
  }
}

SwingUtilities: updateComponentTreeUI(Component c)

  
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.ButtonGroup;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JRadioButton;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
public class MainClass {
  protected JFrame theFrame = new JFrame("LNF Switcher");
  protected Container cp;
  protected String curLF = "javax.swing.plaf.metal.MetalLookAndFeel";
  protected JRadioButton previousButton;
  public MainClass() {
    theFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    cp = theFrame.getContentPane();
    cp.setLayout(new FlowLayout());
    ButtonGroup bg = new ButtonGroup();
    JRadioButton bJava = new JRadioButton("Java");
    bJava.addActionListener(new LNFSetter("javax.swing.plaf.metal.MetalLookAndFeel", bJava));
    bg.add(bJava);
    cp.add(bJava);
    JRadioButton bMSW = new JRadioButton("MS-Windows");
    bMSW.addActionListener(new LNFSetter("com.sun.java.swing.plaf.windows.WindowsLookAndFeel", bMSW));
    bg.add(bMSW);
    cp.add(bMSW);
    JRadioButton bMotif = new JRadioButton("Motif");
    bMotif.addActionListener(new LNFSetter("com.sun.java.swing.plaf.motif.MotifLookAndFeel", bMotif));
    bg.add(bMotif);
    cp.add(bMotif);
    JRadioButton bMac = new JRadioButton("Sun-MacOS");
    bMac.addActionListener(new LNFSetter("com.sun.java.swing.plaf.mac.MacLookAndFeel", bMac));
    bg.add(bMac);
    cp.add(bMac);
    String defaultLookAndFeel = UIManager.getSystemLookAndFeelClassName();
    JRadioButton bDefault = new JRadioButton("Default");
    bDefault.addActionListener(new LNFSetter(defaultLookAndFeel, bDefault));
    bg.add(bDefault);
    cp.add(bDefault);
    (previousButton = bDefault).setSelected(true);
    theFrame.pack();
    theFrame.setVisible(true);
  }
  class LNFSetter implements ActionListener {
    String theLNFName;
    JRadioButton thisButton;
    LNFSetter(String lnfName, JRadioButton me) {
      theLNFName = lnfName;
      thisButton = me;
    }
    public void actionPerformed(ActionEvent e) {
      try {
        UIManager.setLookAndFeel(theLNFName);
        SwingUtilities.updateComponentTreeUI(theFrame);
        theFrame.pack();
      } catch (Exception evt) {
        JOptionPane.showMessageDialog(null, "setLookAndFeel didn"t work: " + evt, "UI Failure",
            JOptionPane.INFORMATION_MESSAGE);
        previousButton.setSelected(true); // reset the GUI to agree
      }
      previousButton = thisButton;
    }
  }
  public static void main(String[] argv) {
    new MainClass();
  }
}