Name: ooR10001 Date: 04/14/2000


If method setIconImage() is invoked with a non-Serializable parameter,
the object is no longer serializable.
For example, it could be invoked with instance of java.awt.Image.
In this case object's field 'icon' will be initialized with non-Serializable
class instance of java.awt.Image. This causes the problem.
 
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.awt.Frame obj = new java.awt.Frame();
        obj.setIconImage(new java.awt.image.BufferedImage(
            8, 8, java.awt.image.BufferedImage.TYPE_BYTE_BINARY));

        FileOutputStream ostream = new FileOutputStream("gold.tmp");
        ObjectOutputStream objos = new ObjectOutputStream(ostream);
        objos.writeObject(obj);
        objos.close();

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

}
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Test output:

java.io.NotSerializableException: java.awt.image.BufferedImage
        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.awt.Frame.writeObject(Frame.java:718)
        at java.lang.reflect.Method.invoke(Native Method)
        at
java.io.ObjectOutputStream.invokeObjectWriter(ObjectOutputStream.java:1878)
        at java.io.ObjectOutputStream.outputObject(ObjectOutputStream.java:1210)
        at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:366)
        at test.main(test.java:14)
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