Web Reference: Data types are divided into two groups: Primitive data types - includes byte, short, int, long, float, double, boolean and char Non-primitive data types - such as String, Arrays and Classes (you will learn more about these in a later chapter) Jan 16, 2026 · Data types in Java define the kind of data a variable can hold and the memory required to store it. They are broadly divided into two categories: Primitive Data Types: Store simple values directly in memory. Non-Primitive (Reference) Data Types: Store memory references to objects. Data Types in Java Primitive Data Types In addition to int, the Java programming language supports seven other primitive data types. A primitive type is predefined by the language and is named by a reserved keyword.
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