Name: avC70361 Date: 06/23/99



  A java.awt.Frame instance cannot be serialized in kestrel when the instance has a java.awt.Button
added. An unexpected exception is thrown : java.io.NotSerializableException: sun.awt.X11GraphicsConfig.

Here is a test demonstrating the bug.
---------------FrameTest.java--------------
import java.awt.Button;
import java.awt.Frame;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;

public class FrameTest {

    public static void main(String args[]) {
        Frame frame = new Frame("frame");
        frame.add(new Button("button"));
        ObjectOutputStream stream = null;

        try {
            stream = new ObjectOutputStream(new ByteArrayOutputStream());
            stream.writeObject(frame);
            stream.close();
            System.out.println("OK");
        } catch (IOException e) {
            System.out.println("Failed. Couldn't write " + frame + " : " + e);
        }
        System.exit(0);
    }
}
-----------The test output---------
> java FrameTest
Failed. Couldn't write java.awt.Frame[frame0,0,0,0x0,invalid,hidden,layout=java.awt.BorderLayout,resizable,title=frame] : java.io.NotSerializableException: sun.awt.X11GraphicsConfig

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