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  1. JDK
  2. JDK-4331943

java.awt.Button.AccessibleAWTButton can not be serialized

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

      Description



      Name: ooR10001 Date: 04/20/2000


      If method addPropertychangeListener() is invoked, the object is no longer
      serializable.

      For example, it could be invoked with instance of
      java.beans.beancontext.BeanContextSupport.

      In this case object's field 'accessibleAWTComponentHandler' will be initialized
      with non-Serializable class instance of
      java.awt.Component$AccessibleAWTComponent.AccessibleAWTComponentHandler. This
      causes the problem.
       
      This is a side effect of calling addPropertychangeListener() method and it
      should be eliminated.

      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 {
              javax.accessibility.AccessibleContext obj =
                      new java.awt.Button("string").getAccessibleContext();
              obj.addPropertyChangeListener(
                      new java.beans.beancontext.BeanContextSupport());

              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.Component$AccessibleAWTComponent$AccessibleAWTComponentHandler
              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:15)
      -------------------------------------------------------------

      ======================================================================

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            Assignee:
            denis Denis Fokin (Inactive)
            Reporter:
            oovsunw Oov Oov (Inactive)
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