What is mutable object and immutable object?
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Answer / Hemlata Mishra
A mutable object is an object whose state can be changed after it is created. For example, a StringBuffer in Java is a mutable object because you can modify its contents by calling methods like append(), insert(), delete() etc. An immutable object, on the other hand, cannot be modified once it's created. A String in Java is an example of an immutable object.
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