Java Primitive Types

Java Primitive Types

üThere are exactly eight primitive data types in Java

üFour of them represent whole valued signed numbers:

übyte, short, int, long

üTwo of them represent floating point numbers:

üfloat, double

üOne of them represents characters:

üchar

üAnd one of them represents boolean values:

üboolean.

Numeric Primitive Types

üThe difference between the various numeric primitive 

types is their size, and therefore the values they can store:

Character Primitive Type

üIt uses unicode to represent character.

üThe char type is unsigned 16 bit values ranging from

 0 to 65536.

üASCII still ranges from 0 to 127.

Example:

class test

{  public static void main (String args[])

  {

  char ch1, ch2;

  ch1=88;

  ch2=‘Y’;

  System.out.println (“ch1 and ch2: “ + ch1+” “+ch2);

  }

}

Output: ch1 and ch2: X Y

Character Primitive Type

Example:

class test

{

  public static void main (String args[])

  {

  char ch1;

  ch1= ‘X’;

  Sytem.out.println (“ch contains “+ch1);

  ch1++;

  System.out.println (“ch1 is now “ + ch1);

  }

}

Output:

ch1 contains X

Ch1 is now Y