This is a duplicate of 4308938, whoops.

Name: stC104175 Date: 04/26/2000


java version "1.3.0rc2"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0rc2-Y)
Java HotSpot(TM) Client VM (build 1.3.0rc2-Y, mixed mode)

The JInternalFrame throws an exception when trying to serialize it.
This code:
*************************
import java.io.*;
import javax.swing.*;

public class JInternalFrameNotSerializable
{
public static void main(String args[])
{
try {
UIManager.setLookAndFeel
(UIManager.getCrossPlatformLookAndFeelClassName());
} catch (Exception e) {
System.out.println(e);
}

JFrame mainFrame = new JFrame();
JDesktopPane desktop = new JDesktopPane();
mainFrame.getContentPane().add(desktop);
mainFrame.setBounds(200,200,500,500);
mainFrame.setVisible(true);
JInternalFrame internalFrame = new JInternalFrame();
internalFrame.setBounds(50,50,100,100);
internalFrame.show();
desktop.add(internalFrame);

try {
ObjectOutputStream out = new ObjectOutputStream(

new BufferedOutputStream(

new FileOutputStream("serial")));

out.writeObject(desktop);
out.close();
} catch (Exception exc) {
System.out.println(exc);
System.exit(1);
}


}
}
*************************

Throws this exception:
*************************
Exception in thread "main" java.lang.Error: Do not use javax.swing.JInternalFram
e.setLayout() use javax.swing.JInternalFrame.getContentPane().setLayout() instea
d
        at javax.swing.JInternalFrame.createRootPaneException(Unknown Source)
        at javax.swing.JInternalFrame.setLayout(Unknown Source)
        at javax.swing.plaf.basic.BasicInternalFrameUI.uninstallListeners(Unknow
n Source)
        at javax.swing.plaf.basic.BasicInternalFrameUI.uninstallUI(Unknown Sourc
e)
        at javax.swing.plaf.metal.MetalInternalFrameUI.uninstallUI(Unknown Sourc
e)
        at javax.swing.JComponent.compWriteObjectNotify(Unknown Source)
        at javax.swing.JInternalFrame.compWriteObjectNotify(Unknown Source)
        at javax.swing.JComponent$EnableSerializationFocusListener.writeObject(U
nknown Source)
        at java.lang.reflect.Method.invoke(Native Method)
        at java.io.ObjectOutputStream.invokeObjectWriter(Unknown Source)
        at java.io.ObjectOutputStream.outputObject(Unknown Source)
        at java.io.ObjectOutputStream.writeObject(Unknown Source)
***********************
The trace stack is longer but I haven't posted all of it.

The Serialization process seems to call setLayout() in JInternalFrame which
throws an exception. It should call getContentPane().setLayout() instead.
(Review ID: 104018)
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