Difference between container and wrapper

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粉色の甜心
粉色の甜心 2021-02-01 23:30

In a programming language (e.g. Java), what\'s the difference between container and wrapper (or is there a difference). I\'ve heard both the terms used

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  • 2021-02-02 00:04

    In programming languages the word container is generally used for structures that can contain more than one element, for example a Map, a Set or a List. These structures normally provide methods like contains, that are semantically suitable if the object can contain more than one item.

    A wrapper instead is something that wraps around a single object to provide more functionalities and interfaces to it. The typical example is the Integer class that in Java wraps the base type int.

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