Name: yyT116575 Date: 11/14/2000


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)

The attached program includes a JMenuBar with a JMenu in it. Clicking on
the "Remove" button should cause the JMenuBar and the JMenu to become garbage.
The JMenuBar does become garbage, but the JMenu does not. I do not have any
poitners to it, they're all from JDK (BasicMenuUI$PostAction,
BasicMenuUI$ChangeHandler, SwingPropertyChangeSupport, etc).

--- code ---
import javax.swing.*;
import java.awt.event.*;

class Test {
  JFrame f;
  JMenuBar mb;
  JMenu menu;
  
  Test () {
    f = new JFrame("TEST");
    mb = new JMenuBar();
    menu = new JMenu("Test Menu");
    mb.add(menu);
    f.setJMenuBar(mb);
    JButton b = new JButton("Remove");
    f.getContentPane().add(b);
    b.addActionListener(new ActionListener () {
        public void actionPerformed (ActionEvent e) {
          disposeMenu();
        }
      });
    f.pack();
    f.show();
  }

  private void disposeMenu () {
    f.setJMenuBar(null);
    mb.remove(menu);
    menu = null;
    mb = null;
    f.validate();
  }

  public static void main (String[] args) {
    new Test();
  }
}
(Review ID: 112246)
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