Name: ooR10001 Date: 05/10/2000


java.awt.dnd.DragGestureEvent object could not be serialized because
corresponding class has non-transient and non-static field 'dragSource' of
non-Serializable class java.awt.dnd.DragSource. This field must be transient.
 
The test example to reproduce the bug:
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import java.io.FileOutputStream;
import java.io.ObjectOutputStream;

public class test {

  public static void main(String[] args) {
    try {
        java.util.Vector x = new java.util.Vector();
        x.add(new java.awt.Button("string"));
        java.awt.dnd.DragGestureEvent obj = new java.awt.dnd.DragGestureEvent(
            (new java.awt.dnd.DragSource()).createDefaultDragGestureRecognizer(
                new java.awt.Button("string"),
                java.awt.dnd.DnDConstants.ACTION_COPY,
                null),
            java.awt.dnd.DnDConstants.ACTION_COPY,
            new java.awt.Point(1,1),
        (java.util.List)x);
                
        FileOutputStream ostream = new FileOutputStream("gold.tmp");
        ObjectOutputStream objos = new ObjectOutputStream(ostream);
        objos.writeObject(obj);
        objos.close();
        System.out.println("OKAY");

    } catch (java.io.IOException e) {
        e.printStackTrace();
    }
  }

}
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Test output:

java.io.NotSerializableException: java.awt.dnd.DragSource
        at java.io.ObjectOutputStream.outputObject(ObjectOutputStream.java:1148)
        at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:366)
        at
java.io.ObjectOutputStream.outputClassFields(ObjectOutputStream.java:1841)
        at
java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:480)
        at java.io.ObjectOutputStream.outputObject(ObjectOutputStream.java:1214)
        at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:366)
        at test.main(test.java:21)
<program hangs>
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