Web Reference: For this, Java has a boolean data type, which can store true or false values. The name boolean comes from George Boole, a mathematician who first defined the logic system used in computers today. A boolean type is declared with the boolean keyword and can only take the values true or false: 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. Jan 16, 2026 · Non-primitive data types store references (memory addresses) rather than actual values. They are created by users and include types like String, Class, Object, Interface, and Array.
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