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  1. JDK
  2. JDK-4336921

java.awt.dnd.DragGestureEvent could not be serialized

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    • Subcomponent:
    • CPU:
      sparc
    • OS:
      solaris_2.6

      Description



      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:
      -------------------------------------------------------------
      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();
          }
        }

      }
      -------------------------------------------------------------
      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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              Assignee:
              dmendenhsunw David Mendenhall (Inactive)
              Reporter:
              oovsunw Oov Oov (Inactive)
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