Web Reference: What are Wrapper Classes in Java? Wrapper classes are Java predefined classes that are responsible to convert the given string type the numerical value into equivalent primitive data type and vice-versa. 1 day ago · 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:
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