Name: ooR10001 Date: 11/17/2000


Serialization of java.lang.ClassNotFoundException class in jdk1.4 is incorrect.
The following test is showing this bug:
----------------------------------------
public class test {

  public static void main(String[] args) {
      ClassNotFoundException m = new ClassNotFoundException();
      try {
          java.io.FileOutputStream fos =
              new java.io.FileOutputStream("test.ser");
          java.io.ObjectOutputStream oos =
              new java.io.ObjectOutputStream(fos);
          oos.writeObject(m);
          oos.close();
          java.io.FileInputStream fis =
              new java.io.FileInputStream("test.ser");
          java.io.ObjectInputStream ois =
              new java.io.ObjectInputStream(fis);
          Object o = ois.readObject();
          ois.close();
      } catch (java.io.IOException e) {
          System.out.println("Exception thrown: " + e);
      } catch (ClassNotFoundException e) {
          System.out.println("Exception thrown: " + e);
      }
  }
}
----------------------------------------

Output:
---------------------------
Exception in thread "main" java.lang.IllegalStateException: Can't overwrite cause
        at java.lang.Throwable.initCause(Throwable.java:305)
        at java.lang.ClassNotFoundException.readObject(ClassNotFoundException.java:115)
        at java.lang.reflect.Method.invoke(Native Method)
        at java.io.ObjectInputStream.invokeObjectReader(ObjectInputStream.java:2213)
        at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1410)
        at java.io.ObjectInputStream.readObject(ObjectInputStream.java:386)
        at java.io.ObjectInputStream.readObject(ObjectInputStream.java:236)
        at test.main(test.java:16)
---------------------------

This needs to be fixed.

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