Java 6 JComboBox Regression?

Today I decided to try out my application with the Java 6 JRE. I was quite impressed until I found that the JComboBox is no longer firing action events when the user selects the same item from the list. Action events are fired in JRE 1.4 and 1.5, but it breaks in 1.6.

Here is a simple test case:

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import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JComboBox;

import javax.swing.JFrame;

public class ActionTest extends JFrame {

public ActionTest() {

String[] items = { "item1", "item2", "item3"};

JComboBox jComboBox = new JComboBox(items);

jComboBox.addActionListener(new ActionHandler());

getContentPane().add(jComboBox);

pack();

setVisible(true);

}

public static void main(String[] args) {

ActionTest actionTest = new ActionTest();

}

class ActionHandler implements ActionListener {

public final void actionPerformed(final ActionEvent e) {

System.out.println("Action Event Fired");

}

}

}

When the above code is run under java 1.4 or 1.5, an action event is fired even when the user selects the same item from the list. According to the docs this is the correct behaviour. However, when the above code is run under 1.6, no action events are fired when the user selects the same item from the list. This seems like a rather serious regression. Has anyone else experienced this?

Robert

[1489 byte] By [tyriea] at [2007-11-26 12:41:04]