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: May 20, 2009 · In general, a wrapper class is any class which "wraps" or "encapsulates" the functionality of another class or component.
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