Java Tutorial/Swing Event/ListSelectionListener

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Implement a graphical list selection monitor

import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
public class SelectionMonitor extends JPanel {
  String label[] = { "1", "2", "3"};
  JCheckBox checks[] = new JCheckBox[label.length];
  JList list = new JList(label);
  public SelectionMonitor() {
    JScrollPane pane = new JScrollPane(list);
    add(pane);
    list.addListSelectionListener(new RadioUpdater());
    for (int i = 0; i < label.length; i++) {
      checks[i] = new JCheckBox("Selection " + i);
      add(checks[i]);
    }
  }
  public static void main(String s[]) {
    JFrame frame = new JFrame("Selection Monitor");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setContentPane(new SelectionMonitor());
    frame.pack();
    frame.setVisible(true);
  }
}
class RadioUpdater implements ListSelectionListener {
  public void valueChanged(ListSelectionEvent e) {
    if ((!e.getValueIsAdjusting()) || (e.getFirstIndex() == -1))
      return;
    for (int i = e.getFirstIndex(); i <= e.getLastIndex(); i++) {
      System.out.println(((JList) e.getSource()).isSelectedIndex(i));
    }
  }
}





Listening to JList Events with a ListSelectionListener

If you want to know when elements of a JList have been selected, you need to attach a ListSelectionListener to the JList or the ListSelectionModel.



public interface ListSelectionListener extends EventListener {
  public void valueChanged(ListSelectionEvent e);
}





ListSelectionEvent

import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
public class Main extends JFrame {
  public Main() {
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    String items[] = { "A", "B", "C", "D" };
    JList list = new JList(items);
    ListSelectionModel selModel = list.getSelectionModel();
    selModel.addListSelectionListener(new ListSelectionListener() {
      public void valueChanged(ListSelectionEvent e) {
        if (!e.getValueIsAdjusting()) {
          System.out.println("selection changed: " + e.getFirstIndex());
        }
      }
    });
    getContentPane().add(list);
    pack();
    setVisible(true);
  }
  public static void main(String[] args) {
    Main m = new Main();
  }
}





ListSelectionListener and ListSelectionEvent

/*
 * Copyright (c) 1995 - 2008 Sun Microsystems, Inc.  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 Sun Microsystems 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.
 */
/*
 * ListDataEventDemo.java requires the Java Look and Feel Graphics
 * Repository (jlfgr-1_0.jar).  You can download this file from
 * http://java.sun.ru/developer/techDocs/hi/repository/
 * Put it in the class path using one of the following commands
 * (assuming jlfgr-1_0.jar is in a subdirectory named jars):
 *
 *   java -cp .;jars/jlfgr-1_0.jar ListDataEventDemo [Microsoft Windows]
 *   java -cp .:jars/jlfgr-1_0.jar ListDataEventDemo [UNIX]
 */
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.Insets;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.DefaultListModel;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.ListSelectionModel;
import javax.swing.event.ListDataEvent;
import javax.swing.event.ListDataListener;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
public class ListDataEventDemo extends JPanel implements ListSelectionListener {
  private JList list;
  private DefaultListModel listModel;
  private static final String addString = "Add";
  private static final String deleteString = "Delete";
  private static final String upString = "Move up";
  private static final String downString = "Move down";
  private JButton addButton;
  private JButton deleteButton;
  private JButton upButton;
  private JButton downButton;
  private JTextField nameField;
  private JTextArea log;
  static private String newline = "\n";
  public ListDataEventDemo() {
    super(new BorderLayout());
    // Create and populate the list model.
    listModel = new DefaultListModel();
    listModel.addElement("Whistler, Canada");
    listModel.addElement("Jackson Hole, Wyoming");
    listModel.addElement("Squaw Valley, California");
    listModel.addElement("Telluride, Colorado");
    listModel.addElement("Taos, New Mexico");
    listModel.addElement("Snowbird, Utah");
    listModel.addElement("Chamonix, France");
    listModel.addElement("Banff, Canada");
    listModel.addElement("Arapahoe Basin, Colorado");
    listModel.addElement("Kirkwood, California");
    listModel.addElement("Sun Valley, Idaho");
    listModel.addListDataListener(new MyListDataListener());
    // Create the list and put it in a scroll pane.
    list = new JList(listModel);
    list.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
    list.setSelectedIndex(0);
    list.addListSelectionListener(this);
    JScrollPane listScrollPane = new JScrollPane(list);
    // Create the list-modifying buttons.
    addButton = new JButton(addString);
    addButton.setActionCommand(addString);
    addButton.addActionListener(new AddButtonListener());
    deleteButton = new JButton(deleteString);
    deleteButton.setActionCommand(deleteString);
    deleteButton.addActionListener(new DeleteButtonListener());
    ImageIcon icon = createImageIcon("Up16");
    if (icon != null) {
      upButton = new JButton(icon);
      upButton.setMargin(new Insets(0, 0, 0, 0));
    } else {
      upButton = new JButton("Move up");
    }
    upButton.setToolTipText("Move the currently selected list item higher.");
    upButton.setActionCommand(upString);
    upButton.addActionListener(new UpDownListener());
    icon = createImageIcon("Down16");
    if (icon != null) {
      downButton = new JButton(icon);
      downButton.setMargin(new Insets(0, 0, 0, 0));
    } else {
      downButton = new JButton("Move down");
    }
    downButton.setToolTipText("Move the currently selected list item lower.");
    downButton.setActionCommand(downString);
    downButton.addActionListener(new UpDownListener());
    JPanel upDownPanel = new JPanel(new GridLayout(2, 1));
    upDownPanel.add(upButton);
    upDownPanel.add(downButton);
    // Create the text field for entering new names.
    nameField = new JTextField(15);
    nameField.addActionListener(new AddButtonListener());
    String name = listModel.getElementAt(list.getSelectedIndex()).toString();
    nameField.setText(name);
    // Create a control panel, using the default FlowLayout.
    JPanel buttonPane = new JPanel();
    buttonPane.add(nameField);
    buttonPane.add(addButton);
    buttonPane.add(deleteButton);
    buttonPane.add(upDownPanel);
    // Create the log for reporting list data events.
    log = new JTextArea(10, 20);
    JScrollPane logScrollPane = new JScrollPane(log);
    // Create a split pane for the log and the list.
    JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT,
        listScrollPane, logScrollPane);
    splitPane.setResizeWeight(0.5);
    // Put everything together.
    add(buttonPane, BorderLayout.PAGE_START);
    add(splitPane, BorderLayout.CENTER);
  }
  class MyListDataListener implements ListDataListener {
    public void contentsChanged(ListDataEvent e) {
      log.append("contentsChanged: " + e.getIndex0() + ", " + e.getIndex1()
          + newline);
      log.setCaretPosition(log.getDocument().getLength());
    }
    public void intervalAdded(ListDataEvent e) {
      log.append("intervalAdded: " + e.getIndex0() + ", " + e.getIndex1()
          + newline);
      log.setCaretPosition(log.getDocument().getLength());
    }
    public void intervalRemoved(ListDataEvent e) {
      log.append("intervalRemoved: " + e.getIndex0() + ", " + e.getIndex1()
          + newline);
      log.setCaretPosition(log.getDocument().getLength());
    }
  }
  class DeleteButtonListener implements ActionListener {
    public void actionPerformed(ActionEvent e) {
      /*
       * This method can be called only if there"s a valid selection, so go
       * ahead and remove whatever"s selected.
       */
      ListSelectionModel lsm = list.getSelectionModel();
      int firstSelected = lsm.getMinSelectionIndex();
      int lastSelected = lsm.getMaxSelectionIndex();
      listModel.removeRange(firstSelected, lastSelected);
      int size = listModel.size();
      if (size == 0) {
        // List is empty: disable delete, up, and down buttons.
        deleteButton.setEnabled(false);
        upButton.setEnabled(false);
        downButton.setEnabled(false);
      } else {
        // Adjust the selection.
        if (firstSelected == listModel.getSize()) {
          // Removed item in last position.
          firstSelected--;
        }
        list.setSelectedIndex(firstSelected);
      }
    }
  }
  /** A listener shared by the text field and add button. */
  class AddButtonListener implements ActionListener {
    public void actionPerformed(ActionEvent e) {
      if (nameField.getText().equals("")) {
        // User didn"t type in a name...
        Toolkit.getDefaultToolkit().beep();
        return;
      }
      int index = list.getSelectedIndex();
      int size = listModel.getSize();
      // If no selection or if item in last position is selected,
      // add the new one to end of list, and select new one.
      if (index == -1 || (index + 1 == size)) {
        listModel.addElement(nameField.getText());
        list.setSelectedIndex(size);
        // Otherwise insert the new one after the current selection,
        // and select new one.
      } else {
        listModel.insertElementAt(nameField.getText(), index + 1);
        list.setSelectedIndex(index + 1);
      }
    }
  }
  // Listen for clicks on the up and down arrow buttons.
  class UpDownListener implements ActionListener {
    public void actionPerformed(ActionEvent e) {
      // This method can be called only when
      // there"s a valid selection,
      // so go ahead and move the list item.
      int moveMe = list.getSelectedIndex();
      if (e.getActionCommand().equals(upString)) {
        // UP ARROW BUTTON
        if (moveMe != 0) {
          // not already at top
          swap(moveMe, moveMe - 1);
          list.setSelectedIndex(moveMe - 1);
          list.ensureIndexIsVisible(moveMe - 1);
        }
      } else {
        // DOWN ARROW BUTTON
        if (moveMe != listModel.getSize() - 1) {
          // not already at bottom
          swap(moveMe, moveMe + 1);
          list.setSelectedIndex(moveMe + 1);
          list.ensureIndexIsVisible(moveMe + 1);
        }
      }
    }
  }
  // Swap two elements in the list.
  private void swap(int a, int b) {
    Object aObject = listModel.getElementAt(a);
    Object bObject = listModel.getElementAt(b);
    listModel.set(a, bObject);
    listModel.set(b, aObject);
  }
  // Listener method for list selection changes.
  public void valueChanged(ListSelectionEvent e) {
    if (e.getValueIsAdjusting() == false) {
      if (list.getSelectedIndex() == -1) {
        // No selection: disable delete, up, and down buttons.
        deleteButton.setEnabled(false);
        upButton.setEnabled(false);
        downButton.setEnabled(false);
        nameField.setText("");
      } else if (list.getSelectedIndices().length > 1) {
        // Multiple selection: disable up and down buttons.
        deleteButton.setEnabled(true);
        upButton.setEnabled(false);
        downButton.setEnabled(false);
      } else {
        // Single selection: permit all operations.
        deleteButton.setEnabled(true);
        upButton.setEnabled(true);
        downButton.setEnabled(true);
        nameField.setText(list.getSelectedValue().toString());
      }
    }
  }
  /** Returns an ImageIcon, or null if the path was invalid. */
  protected static ImageIcon createImageIcon(String imageName) {
    String imgLocation = "toolbarButtonGraphics/navigation/" + imageName
        + ".gif";
    java.net.URL imageURL = ListDataEventDemo.class.getResource(imgLocation);
    if (imageURL == null) {
      System.err.println("Resource not found: " + imgLocation);
      return null;
    } else {
      return new ImageIcon(imageURL);
    }
  }
  /**
   * Create the GUI and show it. For thread safety, this method should be
   * invoked from the event-dispatching thread.
   */
  private static void createAndShowGUI() {
    // Create and set up the window.
    JFrame frame = new JFrame("ListDataEventDemo");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    // Create and set up the content pane.
    JComponent newContentPane = new ListDataEventDemo();
    newContentPane.setOpaque(true); // content panes must be opaque
    frame.setContentPane(newContentPane);
    // Don"t let the content pane get too small.
    // (Works if the Java look and feel provides
    // the window decorations.)
    newContentPane.setMinimumSize(new Dimension(newContentPane
        .getPreferredSize().width, 100));
    // Display the window.
    frame.pack();
    frame.setVisible(true);
  }
  public static void main(String[] args) {
    // Schedule a job for the event-dispatching thread:
    // creating and showing this application"s GUI.
    javax.swing.SwingUtilities.invokeLater(new Runnable() {
      public void run() {
        createAndShowGUI();
      }
    });
  }
}





ListSelectionModel and ListSelectionListener

/*
 * Copyright (c) 1995 - 2008 Sun Microsystems, Inc.  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 Sun Microsystems 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.
 */
/*
 * ListSelectionDemo.java requires no other files.
 */
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.BorderFactory;
import javax.swing.BoxLayout;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.JTable;
import javax.swing.JTextArea;
import javax.swing.ListSelectionModel;
import javax.swing.ScrollPaneConstants;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
public class ListSelectionDemo extends JPanel {
  JTextArea output;
  JList list;
  JTable table;
  String newline = "\n";
  ListSelectionModel listSelectionModel;
  public ListSelectionDemo() {
    super(new BorderLayout());
    String[] listData = { "one", "two", "three", "four", "five", "six", "seven" };
    String[] columnNames = { "French", "Spanish", "Italian" };
    list = new JList(listData);
    listSelectionModel = list.getSelectionModel();
    listSelectionModel
        .addListSelectionListener(new SharedListSelectionHandler());
    JScrollPane listPane = new JScrollPane(list);
    JPanel controlPane = new JPanel();
    String[] modes = { "SINGLE_SELECTION", "SINGLE_INTERVAL_SELECTION",
        "MULTIPLE_INTERVAL_SELECTION" };
    final JComboBox comboBox = new JComboBox(modes);
    comboBox.setSelectedIndex(2);
    comboBox.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        String newMode = (String) comboBox.getSelectedItem();
        if (newMode.equals("SINGLE_SELECTION")) {
          listSelectionModel
              .setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
        } else if (newMode.equals("SINGLE_INTERVAL_SELECTION")) {
          listSelectionModel
              .setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
        } else {
          listSelectionModel
              .setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
        }
        output.append("----------" + "Mode: " + newMode + "----------"
            + newline);
      }
    });
    controlPane.add(new JLabel("Selection mode:"));
    controlPane.add(comboBox);
    // Build output area.
    output = new JTextArea(1, 10);
    output.setEditable(false);
    JScrollPane outputPane = new JScrollPane(output,
        ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS,
        ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED);
    // Do the layout.
    JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT);
    add(splitPane, BorderLayout.CENTER);
    JPanel topHalf = new JPanel();
    topHalf.setLayout(new BoxLayout(topHalf, BoxLayout.LINE_AXIS));
    JPanel listContainer = new JPanel(new GridLayout(1, 1));
    listContainer.setBorder(BorderFactory.createTitledBorder("List"));
    listContainer.add(listPane);
    topHalf.setBorder(BorderFactory.createEmptyBorder(5, 5, 0, 5));
    topHalf.add(listContainer);
    // topHalf.add(tableContainer);
    topHalf.setMinimumSize(new Dimension(100, 50));
    topHalf.setPreferredSize(new Dimension(100, 110));
    splitPane.add(topHalf);
    JPanel bottomHalf = new JPanel(new BorderLayout());
    bottomHalf.add(controlPane, BorderLayout.PAGE_START);
    bottomHalf.add(outputPane, BorderLayout.CENTER);
    // XXX: next line needed if bottomHalf is a scroll pane:
    // bottomHalf.setMinimumSize(new Dimension(400, 50));
    bottomHalf.setPreferredSize(new Dimension(450, 135));
    splitPane.add(bottomHalf);
  }
  /**
   * Create the GUI and show it. For thread safety, this method should be
   * invoked from the event-dispatching thread.
   */
  private static void createAndShowGUI() {
    // Create and set up the window.
    JFrame frame = new JFrame("ListSelectionDemo");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    // Create and set up the content pane.
    ListSelectionDemo demo = new ListSelectionDemo();
    demo.setOpaque(true);
    frame.setContentPane(demo);
    // Display the window.
    frame.pack();
    frame.setVisible(true);
  }
  public static void main(String[] args) {
    // Schedule a job for the event-dispatching thread:
    // creating and showing this application"s GUI.
    javax.swing.SwingUtilities.invokeLater(new Runnable() {
      public void run() {
        createAndShowGUI();
      }
    });
  }
  class SharedListSelectionHandler implements ListSelectionListener {
    public void valueChanged(ListSelectionEvent e) {
      ListSelectionModel lsm = (ListSelectionModel) e.getSource();
      int firstIndex = e.getFirstIndex();
      int lastIndex = e.getLastIndex();
      boolean isAdjusting = e.getValueIsAdjusting();
      output.append("Event for indexes " + firstIndex + " - " + lastIndex
          + "; isAdjusting is " + isAdjusting + "; selected indexes:");
      if (lsm.isSelectionEmpty()) {
        output.append(" <none>");
      } else {
        // Find out which indexes are selected.
        int minIndex = lsm.getMinSelectionIndex();
        int maxIndex = lsm.getMaxSelectionIndex();
        for (int i = minIndex; i <= maxIndex; i++) {
          if (lsm.isSelectedIndex(i)) {
            output.append(" " + i);
          }
        }
      }
      output.append(newline);
      output.setCaretPosition(output.getDocument().getLength());
    }
  }
}





ListSelectionModel, JTable and ListSelectionListener

/*
 * Copyright (c) 1995 - 2008 Sun Microsystems, Inc.  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 Sun Microsystems 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.
 */
/*
 * TableSelectionDemo.java requires no other files.
 */
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.BorderFactory;
import javax.swing.BoxLayout;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.JTable;
import javax.swing.JTextArea;
import javax.swing.ListSelectionModel;
import javax.swing.ScrollPaneConstants;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
public class TableSelectionDemo extends JPanel {
  JTextArea output;
  JList list;
  JTable table;
  String newline = "\n";
  ListSelectionModel listSelectionModel;
  public TableSelectionDemo() {
    super(new BorderLayout());
    String[] columnNames = { "French", "Spanish", "Italian" };
    String[][] tableData = { { "un", "uno", "uno" }, { "deux", "dos", "due" },
        { "trois", "tres", "tre" }, { "quatre", "cuatro", "quattro" },
        { "cinq", "cinco", "cinque" }, { "six", "seis", "sei" },
        { "sept", "siete", "sette" } };
    table = new JTable(tableData, columnNames);
    listSelectionModel = table.getSelectionModel();
    listSelectionModel
        .addListSelectionListener(new SharedListSelectionHandler());
    table.setSelectionModel(listSelectionModel);
    JScrollPane tablePane = new JScrollPane(table);
    // Build control area (use default FlowLayout).
    JPanel controlPane = new JPanel();
    String[] modes = { "SINGLE_SELECTION", "SINGLE_INTERVAL_SELECTION",
        "MULTIPLE_INTERVAL_SELECTION" };
    final JComboBox comboBox = new JComboBox(modes);
    comboBox.setSelectedIndex(2);
    comboBox.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        String newMode = (String) comboBox.getSelectedItem();
        if (newMode.equals("SINGLE_SELECTION")) {
          listSelectionModel
              .setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
        } else if (newMode.equals("SINGLE_INTERVAL_SELECTION")) {
          listSelectionModel
              .setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
        } else {
          listSelectionModel
              .setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
        }
        output.append("----------" + "Mode: " + newMode + "----------"
            + newline);
      }
    });
    controlPane.add(new JLabel("Selection mode:"));
    controlPane.add(comboBox);
    // Build output area.
    output = new JTextArea(1, 10);
    output.setEditable(false);
    JScrollPane outputPane = new JScrollPane(output,
        ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS,
        ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED);
    // Do the layout.
    JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT);
    add(splitPane, BorderLayout.CENTER);
    JPanel topHalf = new JPanel();
    topHalf.setLayout(new BoxLayout(topHalf, BoxLayout.LINE_AXIS));
    JPanel listContainer = new JPanel(new GridLayout(1, 1));
    JPanel tableContainer = new JPanel(new GridLayout(1, 1));
    tableContainer.setBorder(BorderFactory.createTitledBorder("Table"));
    tableContainer.add(tablePane);
    tablePane.setPreferredSize(new Dimension(420, 130));
    topHalf.setBorder(BorderFactory.createEmptyBorder(5, 5, 0, 5));
    topHalf.add(listContainer);
    topHalf.add(tableContainer);
    topHalf.setMinimumSize(new Dimension(250, 50));
    topHalf.setPreferredSize(new Dimension(200, 110));
    splitPane.add(topHalf);
    JPanel bottomHalf = new JPanel(new BorderLayout());
    bottomHalf.add(controlPane, BorderLayout.PAGE_START);
    bottomHalf.add(outputPane, BorderLayout.CENTER);
    // XXX: next line needed if bottomHalf is a scroll pane:
    // bottomHalf.setMinimumSize(new Dimension(400, 50));
    bottomHalf.setPreferredSize(new Dimension(450, 110));
    splitPane.add(bottomHalf);
  }
  /**
   * Create the GUI and show it. For thread safety, this method should be
   * invoked from the event-dispatching thread.
   */
  private static void createAndShowGUI() {
    // Create and set up the window.
    JFrame frame = new JFrame("TableSelectionDemo");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    // Create and set up the content pane.
    TableSelectionDemo demo = new TableSelectionDemo();
    demo.setOpaque(true);
    frame.setContentPane(demo);
    // Display the window.
    frame.pack();
    frame.setVisible(true);
  }
  public static void main(String[] args) {
    // Schedule a job for the event-dispatching thread:
    // creating and showing this application"s GUI.
    javax.swing.SwingUtilities.invokeLater(new Runnable() {
      public void run() {
        createAndShowGUI();
      }
    });
  }
  class SharedListSelectionHandler implements ListSelectionListener {
    public void valueChanged(ListSelectionEvent e) {
      ListSelectionModel lsm = (ListSelectionModel) e.getSource();
      int firstIndex = e.getFirstIndex();
      int lastIndex = e.getLastIndex();
      boolean isAdjusting = e.getValueIsAdjusting();
      output.append("Event for indexes " + firstIndex + " - " + lastIndex
          + "; isAdjusting is " + isAdjusting + "; selected indexes:");
      if (lsm.isSelectionEmpty()) {
        output.append(" <none>");
      } else {
        // Find out which indexes are selected.
        int minIndex = lsm.getMinSelectionIndex();
        int maxIndex = lsm.getMaxSelectionIndex();
        for (int i = minIndex; i <= maxIndex; i++) {
          if (lsm.isSelectedIndex(i)) {
            output.append(" " + i);
          }
        }
      }
      output.append(newline);
      output.setCaretPosition(output.getDocument().getLength());
    }
  }
}





Shared ListSelectionHandler

import java.awt.BorderLayout;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
class SharedListSelectionHandler implements ListSelectionListener {
  public void valueChanged(ListSelectionEvent e) {
    ListSelectionModel lsm = (ListSelectionModel) e.getSource();
    int firstIndex = e.getFirstIndex();
    int lastIndex = e.getLastIndex();
    boolean isAdjusting = e.getValueIsAdjusting();
    System.out.println("Event for indexes " + firstIndex + " - " + lastIndex + "; isAdjusting is "
        + isAdjusting + "; selected indexes:");
    if (lsm.isSelectionEmpty()) {
      System.out.println(" <none>");
    } else {
      // Find out which indexes are selected.
      int minIndex = lsm.getMinSelectionIndex();
      int maxIndex = lsm.getMaxSelectionIndex();
      for (int i = minIndex; i <= maxIndex; i++) {
        if (lsm.isSelectedIndex(i)) {
          System.out.println(" " + i);
        }
      }
    }
  }
}
public class AddingTableSelectionListener {
  static String labels[] = { "A", "B", "C", "D", "E", "F", "G" };
  public static void main(String args[]) {
    JFrame frame = new JFrame("Modifying Model");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    String[] columnNames = { "French", "Spanish", "Italian" };
    String[][] tableData = { { "un", "uno", "uno" }, { "deux", "dos", "due" },
        { "trois", "tres", "tre" }, { "quatre", "cuatro", "quattro" },
        { "cinq", "cinco", "cinque" }, { "six", "seis", "sei" }, { "sept", "siete", "sette" } };
    JTable table = new JTable(tableData, columnNames);
    table.getSelectionModel().addListSelectionListener(new SharedListSelectionHandler());
    JScrollPane scrollPane1 = new JScrollPane(table);
    frame.add(scrollPane1, BorderLayout.CENTER);
    frame.setSize(640, 300);
    frame.setVisible(true);
  }
}


Источник — «http://jexp.ru/index.php?title=Java_Tutorial/Swing_Event/ListSelectionListener&oldid=2898»