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When to use shallow copy and deep copy ?

 
Praveen Kumar
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Hi

I know concepts about shallow copy and deep copy. Just i want to know when we will go for shallow copy and deep copy ?. Please suggest some examples that would be great.

 
Jesper de Jong
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It depends entirely on what the needs are for the program you are writing - there's no general answer to this question.

I'd avoid copying objects as much as possible - it costs performance and memory. If you make your data objects immutable, you'll never need to copy them.
 
It is sorta covered in the JavaRanch Style Guide.
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