Primitives :
The following keywords are primitives:■ boolean : A value indicating true or false.
■ byte : An 8-bit integer (signed).
■ char : A single Unicode character (16-bit unsigned)
■ double : A 64-bit floating-point number (signed).
■ float : A 32-bit floating-point number (signed).
■ int : A 32-bit integer (signed).
■ long : A 64-bit integer (signed).
■ short : A 16-bit integer (signed).
