This technique requires serializable objects (implement java.io.Serializable). Basically, the object is serialized (writeObject()) and deserialized (readObject()) in a new object. A helper method able to accomplish this is listed as follows:

private static <T> T cloneThroughSerialization(T t) {

  try {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ObjectOutputStream oos = new ObjectOutputStream(baos);
    oos.writeObject(t);

    ByteArrayInputStream bais 
      = new ByteArrayInputStream(baos.toByteArray());
    ObjectInputStream ois = new ObjectInputStream(bais);

    return (T) ois.readObject();
  } catch (IOException | ClassNotFoundException ex) {
    // log exception
    return t;
  }
}

So, the object is serialized in ObjectOutputStream and deserialized in ObjectInputStream. Cloning an object via this method can be accomplished as follows:

Point point = new Point(...);
Point clone = cloneThroughSerialization(point);

A built-in solution based on serialization is provided by Apache Commons Lang, via SerializationUtils. Among its methods, this class provides a method named clone() that can be used as follows:

Point point = new Point(...);
Point clone = SerializationUtils.clone(point);