What are the eight primitive data types in Java?

Java has eight primitive data types: byte (8-bit integer, -128 to 127), short (16-bit integer), int (32-bit integer, most commonly used), long (64-bit integer, uses L suffix), float (32-bit floating point, uses f suffix), double (64-bit floating point, default for decimals), char (16-bit Unicode character), and boolean (true or false). Primitives store actual values directly in memory (stack), not object references, making them more efficient than their wrapper class counterparts.