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  1. JDK
  2. JDK-6466451

In jre 6.0 beta 2 Popup menu behaves differently from jre 5.0 update 8

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      FULL PRODUCT VERSION :
      java version "1.6.0-beta2"
      Java(TM) SE Runtime Environment (build 1.6.0-beta2-b86)
      Java HotSpot(TM) Client VM (build 1.6.0-beta2-b86, mixed mode, sharing)

      java version "1.5.0_07"
      Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_07-b03)
      Java HotSpot(TM) Client VM (build 1.5.0_07-b03, mixed mode, sharing)

      ADDITIONAL OS VERSION INFORMATION :
      Windows XP with SP2

      A DESCRIPTION OF THE PROBLEM :
      JPopupMenu strange behavior when run in different JRE versions.

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      I am a computer engineering undergraduate at Chulalongkon University, Bangkok, Thailand, and I am studying J2SE in “Programming Methodology” course. Recently, I‘ve learned some GUI basics. During this time I consult JFC/Swing Trail in “The Java Tutorial” at lot. All examples in the tutorial requires me to install JavaSE 6.0, so I have to install it on my computer which it already has JDK 1.5.0 update 7 installed. When I did my homework, I have to submit them in an executable jar file. The problem is that JPopupMenu didn’t show up when I execute jar using JRE 6.0 Beta 2, but it did show up perfectly in the way I want when I execute the same jar using JRE 5.0 update 7. See my attached source code.

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      Popup menu should show up in java 6 in the same way as java 5.
      ACTUAL -
      It didn't show up in java 6 at all.

      ERROR MESSAGES/STACK TRACES THAT OCCUR :
      There are no error messages.

      REPRODUCIBILITY :
      This bug can be reproduced always.

      ---------- BEGIN SOURCE ----------
      import java.awt.*;
      import java.awt.event.*;
      import javax.swing.*;

      @SuppressWarnings("serial")
      public class Main extends JFrame {
      ...
      public Main() {
      super("Lab9 Swing+Event");

      setSize(400, 300);
      setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);
      setLocation(200, 100);
      setVisible(true);

      constructPopupMenuAndPopupMenuEventListeners();
      addFrameEventListeners();
      }

      private void constructPopupMenuAndPopupMenuEventListeners() {
      popupmenu = new JPopupMenu();
      menuItemRed = new JMenuItem("Red");
      menuItemGreen = new JMenuItem("Green");
      menuItemBlue = new JMenuItem("Blue");
      popupmenu.add(menuItemRed);
      popupmenu.add(menuItemGreen);
      popupmenu.add(menuItemBlue);
      this.add(popupmenu);
      color = Color.RED;
      menuItemRed.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
      color = Color.RED;
      repaint();
      }
      });
      menuItemGreen.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
      color = Color.GREEN;
      repaint();
      }
      });

      menuItemBlue.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
      color = Color.BLUE;
      repaint();
      }
      });
      }

      private void addFrameEventListeners() {
      this.addMouseListener(new MouseAdapter() {
      @Override
      public void mouseClicked(MouseEvent e) {
      int button = e.getButton();
      if (button == MouseEvent.BUTTON3) {
      popupmenu.show(e.getComponent(), e.getX(), e.getY());
      }
      }
      });
      ...
      }
      ...
      }

      ---------- END SOURCE ----------

      CUSTOMER SUBMITTED WORKAROUND :
      Execute jar using JRE 5.0 update 7 instead.

      Release Regression From : 5.0u8
      The above release value was the last known release where this
      bug was not reproducible. Since then there has been a regression.

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            Assignee:
            alexp Alexander Potochkin (Inactive)
            Reporter:
            ndcosta Nelson Dcosta (Inactive)
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