FULL PRODUCT VERSION :
java version "1.4.2_05"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_05-b04)
Java HotSpot(TM) Client VM (build 1.4.2_05-b04, mixed mode)

java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-b64)
Java HotSpot(TM) Client VM (build 1.5.0-b64, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows 2000 [Version 5.00.2195]

A DESCRIPTION OF THE PROBLEM :
If you create a JButton from an Action that is disabled and then you change the JButtons model to a new DefaultButtonModel() then the button appiers enabled, however, the buttons isEnabled() method returns false.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Execute the snippet as is.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The buttons isEnabled() has to return true, when the button can be pressed (= is enabled)
ACTUAL -
The method return false.

REPRODUCIBILITY :
This bug can be reproduced always.

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

public class MainClass {

  public static void main(String[] args) {
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Action a = new AbstractAction("Button") {

      public void actionPerformed(ActionEvent e) {
        System.out.println(((JComponent)e.getSource()).isEnabled());
      }

      public void setEnabled(boolean b) {
        super.setEnabled(false);
      }
    };
    a.setEnabled(false);
    JButton bt = new JButton(a);
    frame.getContentPane().add(bt);
    bt.setModel(new DefaultButtonModel());
    frame.pack();
    frame.show();
  }
}
---------- END SOURCE ----------
###@###.### 10/21/04 23:07 GMT

We have received a fix for this bug from java.net user thulin.
Attached is the contribution.txt
###@###.### 2005-05-05 19:55:09 GMT