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private static List cloneObject(
   Object obj) throws Exception {
  ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
  ObjectOutputStream out = new ObjectOutputStream(byteOut);
  out.writeObject(obj);
  ByteArrayInputStream byteIn = new ByteArrayInputStream(byteOut
    .toByteArray());
  ObjectInputStream in = new ObjectInputStream(byteIn);
  return  in.readObject();
 }


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class SuperClass {
private int n;

SuperClass() {
System.out.println("SuperClass()");
}

SuperClass(int n) {
System.out.println("SuperClass(" + n + ")");
this.n = n;
}
}
class SubClass extends SuperClass {
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