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In [[computer science]], an '''object type''' (a.k.a. wrapping object) is a [[datatype]] that is used in [[object-oriented programming]] to [[wrapper pattern|wrap]] a non-object type to make it look like an [[object (computer science)|object]].
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==Boxing==
'''Boxing''' is to place a primitive type within an object so that the primitive can be used as an object, in a language where there is a distinction between a primitive type and an object type. For example, [[List (computing)|lists]] may have certain [[Method (computer science)|methods]] which [[arrays]] might not, but the list might also require that all of its members be objects. In this case, the added functionality of the list might be unavailable to a simple list of numbers.
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===Autoboxing===
Autoboxing is the term for treating a primitive type as an object type without any extra source code. The compiler automatically supplies the extra code needed to perform the [[type conversion]].
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===Unboxing===
Unboxing refers to a boxed primitive type which has been broken down and the primitive type retrieved for a process of some kind such as a mathematical operation.
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