Java Primitive Data Types

Java supports 8 primitives types 

Data Type	Size in byte(s)	Default Value
byte	1	0
short	2	0
int	4	0
long	8	0L
float	4	0.0f
double	8	0.0d
char	2	'\u0000'
boolean	NA(OS dependent)	false

Example code

package com.fastlearned;

public class PrimitiveType {

 private byte byteVar = 12;

 private short shortVar = 23;

 private int intVar = 10000;

 private long longVar = 12000000L;

 private float floatVar = 7829.98f;

 private double doubleVar = 5235236.987d;

 private char charVar = 'S';

 private boolean booleanVar = true;

 public PrimitiveType() {

  System.out.println("byteVar = " + byteVar);
  System.out.println("shortVar = " + shortVar);
  System.out.println("intVar = " + intVar);
  System.out.println("longVar = " + longVar);
  System.out.println("floatVar = " + floatVar);
  System.out.println("doubleVar = " + doubleVar);
  System.out.println("charVar = " + charVar);
  System.out.println("booleanVar = " + booleanVar);
 }

 /**
  * @param args
  */
 public static void main(String[] args) {

  new PrimitiveType();

 }

}

Output :

byteVar = 12
shortVar = 23
intVar = 10000
longVar = 12000000
floatVar = 7829.98
doubleVar = 5235236.987
charVar = S
booleanVar = true