Data Types in Java

Data Types in Java:

In Java, there are two types of data types: primitive data types and reference data types.

1. Primitive Data Types:
   • byte: 8-bit signed two’s complement integer (-128 to 127)
   • short: 16-bit signed two’s complement integer (-32,768 to 32,767)
   • int: 32-bit signed two’s complement integer (-2,147,483,648 to 2,147,483,647)
   • long: 64-bit signed two’s complement integer (-9,223,372,036,854,775,808 to 9,223,372,036,854,775,807)
   • float: 32-bit single-precision floating point (approximately ±3.40282347E+38F)
   • double: 64-bit double-precision floating point (approximately ±1.79769313486231570E+308)
   • boolean: true or false
   • char: 16-bit Unicode character (‘\u0000’ to ‘\uffff’)
2. Reference Data Types:
   • Class
   • Array
   • Interface
   • Enum
   • String

Primitive data types are used to represent simple values like numbers and characters, while reference data types are used to represent objects that are instances of a class or an interface.

1. byte: used to represent whole numbers from -128 to 127