Java primitive data types



Primitive Data Types in Java Programming Language :

Data type is nothing but the type of the data. Each Variable in Java must have certain type associated with it which tells us what kind of data a variable can store.

Data Types in Java Programming Language are classified into two main groups – Primitive and Reference Data Types.

A primitive Data Types are :

  1. Data types are predefined by the Java language.
  2. Predefined data types are Reserved keyword so we cannot use them as variable name inside program/application
  3. Primitive values do not share state with other primitive values.
  4. Total Number of Primitive Data Types in Java Programming is 8
  5. All Primitive Data Types have respective Wrapper Classes i.e Integer is wrapper class for primitive type int

Primitive Data Types are –

Primitive Data Types in Java :
boolean char byte int
short long float double

Classification of Data Types in Java Programming Language

Data Types in Java Programming Language

Data Type and Other Details

Type Contains Default Size
boolean true or false false 1 bit
char Unicode Character u0000 16 bits
byte Signed Integer 0 8 bits
short Signed Integer 0 16 bits
int Signed Integer 0 32 bits
long Signed Integer 0 64 bits
float Floating Number 0.0 32 bit
double Floating Number 0.0 64 bit

*to view range of individual data type click here.