A primitive type is predefined by the Java programming language and named by its reserved keyword (§3.9):
booleanNumericType: IntegralType FloatingPointTypeIntegralType: one of
byte short int long charFloatingPointType: one of
Primitive values do not share state with other primitive values.
The numeric types are the integral types and the floating-point types.
The integral types are
long, whose values are 8-bit, 16-bit, 32-bit and 64-bit signed two’s-complement integers, respectively, and
char, whose values are 16-bit unsigned integers representing UTF-16 code units (§3.1).
The floating-point types are
float, whose values include the ...