Autoboxing and Unboxing

[swathi]

What is Autoboxing and Unboxing ?

[manoj]

Autoboxing: Converting a primitive value into an object of the corresponding wrapper class is called autoboxing.
For example, converting int to Integer class.

Unboxing: Converting an object of a wrapper type to its corresponding primitive value is called unboxing.
For example conversion of Integer to int.

[kishore]

Autoboxing:
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-->Converting a primitive value into an object of the corresponding wrapper class is called autoboxing. For example, converting int to Integer class. The Java compiler applies autoboxing when a primitive value is:
Passed as a parameter to a method that expects an object of the corresponding wrapper class.
Assigned to a variable of the corresponding wrapper class.

Unboxing:
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-->Converting an object of a wrapper type to its corresponding primitive value is called unboxing. For example conversion of Integer to int. The Java compiler applies unboxing when an object of a wrapper class is:
Passed as a parameter to a method that expects a value of the corresponding primitive type.
Assigned to a variable of the corresponding primitive type.