Web Reference: Jan 25, 2026 · In Java, wrapper classes allow primitive data types to be represented as objects. This enables primitives to be used in object-oriented features such as collections, generics, and APIs that require objects. Wrapper classes provide a way to use primitive data types (int, boolean, etc..) as objects. The table below shows the primitive type and the equivalent wrapper class: Mar 17, 2024 · “What’s the purpose of a wrapper class?”. It’s one of the most common Java interview questions. Basically, generic classes only work with objects and don’t support primitives. As a result, if we want to work with them, we have to convert primitive values into wrapper objects.
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