FULL PRODUCT VERSION :
java version "1.5.0_06"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)
Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode)

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

A DESCRIPTION OF THE PROBLEM :
The javax.swing.AbstractButton$ButtonActionPropertyChangeListener class does not have a default no Argument constructor, which is required for serialization, even though the class implements the Serializable interface. When an object of JButton is de-serialized then an exception of type “javax.swing.AbstractButton$ButtonActionPropertyChangeListener; no valid constructorjava.io.InvalidClassException” is thrown.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Serialize a new JButton object to file ensuring the JButton object is constructed with an AbstractAction derived object as the argument to the constructor. Then de-serialize the object from file and then an exception is thrown.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
No exception should be thrown and the object should have been deserialized from file
ACTUAL -
An exception is thrown and the object isn’t deserialized from file.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
javax.swing.AbstractButton$ButtonActionPropertyChangeListener; no valid constructorjava.io.InvalidClassException: javax.swing.AbstractButton$ButtonActionPropertyChangeListener; no valid constructor

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
public class JTestApplet extends JApplet
{

private javax.swing.JPanel jContentPane = null;

/**
* @throws java.awt.HeadlessException
*/
public JTestApplet() throws HeadlessException
{
super();

init();
}

public static void main(String[] args) {
}
/**
* This method initializes this
*
* @return void
*/
public void init() {
this.setSize(300, 200);
this.setContentPane(getJContentPane());
}





/**
* This method initializes jContentPane
*
* @return javax.swing.JPanel
*/
private javax.swing.JPanel getJContentPane() {
if (jContentPane == null) {
jContentPane = new javax.swing.JPanel();
jContentPane.setLayout(new BorderLayout());
}
return jContentPane;
}

/* (non-Javadoc)
* @see java.applet.Applet#start()
*/
public void start()
{
File serFile = null;
try
{
String strTempDir = System.getProperty("java.io.tmpdir");

serFile = new File(strTempDir + "\\00000001.ser");

////////////////////////////////////////////
FileOutputStream outStrm = new FileOutputStream(serFile);

ObjectOutputStream outstr = new ObjectOutputStream(outStrm);


////////////////////////////////////////////////////////////////

//create the JButton to serialize with an action for the constructor

JButton button = new JButton(new MyAction("action"));

////////////////////////////////////////////////////////////////

outstr.writeObject(button); //serialize the button

outstr.flush();
outStrm.close();
outstr.close();

serFile = null;

}
catch(Throwable e)
{
System.out.println("Serialization " + e.getMessage() + e);
}

}

/* (non-Javadoc)
* @see java.applet.Applet#stop()
*/
public void stop()
{
try
{
/////////////////////////////////////////////////////////////////////

String strTempDir = System.getProperty("java.io.tmpdir");

File serFile = new File(strTempDir + "\\00000001.ser");


if(serFile.exists() == false)
return;

////////////////////////////////////////////////////////////////////
////////file exists so we de-serialize it////////////////////////

FileInputStream inStrm = new FileInputStream(serFile);
ObjectInputStream in = new ObjectInputStream(inStrm);

//now read back the JButton Object

JButton button = (JButton)in.readObject();

in.close();
inStrm.close();

serFile.delete(); //delete the serialization file
serFile = null;

}
catch(Throwable e)
{
System.out.println("de-Serialization " + e.getMessage() + e);
e.printStackTrace();
}
}

}


class MyAction extends AbstractAction
{
MyAction(String str)
{
super(str);
}

/* (non-Javadoc)
* @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent)
*/
public void actionPerformed(ActionEvent arg0)
{
}
}

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

CUSTOMER SUBMITTED WORKAROUND :
Create the JButton object using the String constructor JButton(String strAction)