Mouse listener for the JComboBox doesn't detect mouse events

Name: vi73552 Date: 03/30/99


1. When the code below is running, the JComboBox doesn't detect
when the mouse entering and exiting it:
When the mouse pointer entering(exiting) the area of the JComboBox
I cannot see the message "ComboBox Entering..." and ComboBox Exiting...
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.util.Vector;
import javax.swing.*;

public class Test
{

  public Test()
  {
     JFrame f = new JFrame("Deposit Dialog");
    JPanel entryPanel = new JPanel(); // for user input
    JComboBox labelBox = new JComboBox();
    JButton okButton = new JButton("Ok");
    f.setSize(320,400);

    Container fc = f.getContentPane();
    fc.setLayout(new GridBagLayout());

    entryPanel.add(new JLabel("Label:"));
    entryPanel.add(labelBox);
    entryPanel.add(okButton);

    labelBox.setEditable(true);
    labelBox.addItem("vug");
    fc.add(entryPanel);

    f.setVisible(true);
    MouseListener mfListener = new MouseAdapter() {
      public void mouseEntered(MouseEvent e) {
System.out.println("Frame Entering...");
      }

     public void mouseExited(MouseEvent e) {
       System.out.println("Frame Exiting...");
      }
    };

    MouseListener mBListener = new MouseAdapter() {
      public void mouseEntered(MouseEvent e) {
System.out.println("Button Entering...");
      }

     public void mouseExited(MouseEvent e) {
       System.out.println("Button Exiting...");
      }
    };

    MouseListener mcbListener = new MouseAdapter() {
      public void mouseEntered(MouseEvent e) {
System.out.println("ComboBox Entering...");
      }

     public void mouseExited(MouseEvent e) {
       System.out.println("ComboBox Exiting...");
      }
    };

    f.addMouseListener(mfListener);
    labelBox.addMouseListener(mcbListener);
    okButton.addMouseListener(mBListener);
    /*
    */

  }

public static void main(String args[])
{
  Test test = new Test();
}

} // class

=================
java -version gives
Classic VM <build JDK-1.2-V, native threads, symcjit>
javs -fullvesrion:
java full vesrion "JDK-1.2-V"
(Review ID: 56278)
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