Java / Object, Class and Package
Difference between shallow and deep copy in Java.
|Shallow copy.||Deep copy.|
|Cloned Object and the original object are not 100% disjoint.||Cloned Object and original object are 100% disjoint.|
|Any changes to the cloned object will be reflected in original object or vice versa.||Changes made to cloned object won't be reflected to original object or vice versa.|
|Default version of clone method creates the shallow copy of an object.||To create the deep copy of an object, you have to override clone method.|
|Shallow copy is preferred if an object has only primitive fields.||Deep copy is preferred if an object has references to other objects as fields.|
|Shallow copy is fast and cost effective.||Deep copy is slow and very expensive.|
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