Is it possible to deep copy an Object out of the box? i.e. any other way than coding a clone function manually.
Is it possible to deep copy an Object out of the box? i.e. any
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Is it possible to deep copy an Object out of the box? i.e. any other way than coding a clone function manually.
Cloning does not necessarily perform a deep copy. In fact, the default implementation of
Object.clone()creates a shallow copy.If the object’s closure consists of objects that implement
SerializableorExternalizable, you can useObjectOutputStreamandObjectInputStreamto create a deep copy … but it is expensive.The
cloninglibrary is another option, but my initial reading of the code is that it relies on the class of every object in the graph providing a no-argument constructor. Then it will then patch the resulting object to have a copy of the original object’s state. This process might have undesirable side-effects, depending on what the no-args constructor actually does.In short, I don’t think there is a universal solution.