Name: sl110371 Date: 07/06/2000


java version "1.3.0beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0beta-b07)
Java HotSpot(TM) Client VM (build 1.3.0beta-b04, mixed mode)

Please see the source code and description below:



// Imports
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;



/**
 * Synopsis:
 * When a menu is opened and the mouse is moved over the items on the menu,
 * they do not highlight under JDK 1.3 beta for Linux. But it works fine
 * with JDK 1.3 for Windows.
 *
 * Here is what java -version prints in the Linux version:
 * java version "1.3.0beta"
 * Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0beta-b07)
 * Java HotSpot(TM) Client VM (build 1.3.0beta-b04, mixed mode)
 *
 * Here is what java -version prints in the Windows version:
 * java version "1.3.0"
 * Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0-C)
 * Java HotSpot(TM) Client VM (build 1.3.0-C, mixed mode)
 *
 * Description:
 * Start the programm under JDK 1.3 for Windows and open the menu from the
 * menubar. Move the mouse (without pressing any buttons) over the menu and
 * notice how each menu item automatically highlights when the mouse moves
 * over it.
 * Now do the same thing under JDK 1.3 for Linux. The menu item do not
 * highlight here. The actions that are associated with the menu items are
 * triggered correctly, but the highlighting does not occur until an item is
 * clicked.
 *
 * @author Ralph Kar (###@###.###)
 */
public class TestApp extends JFrame
{
    /**
     * Default constructor.
     */
    public TestApp() {
        super("TestApp");

        this.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent ev) {
                System.exit(0);
            }
        });

        JMenuBar menuBar = new JMenuBar();

        JMenu menu = new JMenu("Menu 1");

        JMenuItem item1 = new JMenuItem("Item 1");
        item1.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent ev) {
                System.out.println("Item 1 has been clicked.");
            }
        });

        JMenuItem item2 = new JMenuItem("Item 2");
        item2.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent ev) {
                System.out.println("Item 2 has been clicked.");
            }
        });

        JMenuItem item3 = new JMenuItem("Item 3");
        item3.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent ev) {
                System.out.println("Item 3 has been clicked.");
            }
        });

        menu.add(item1);
        menu.add(item2);
        menu.add(item3);

        menuBar.add(menu);

        this.setJMenuBar(menuBar);

        this.setSize(300, 200);
        this.setVisible(true);
    }


    /**
     * Application startup method.
     */
    public static void main(String[] args) {
        new TestApp();
    }
}
(Review ID: 106907)
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