1.3 Variables and Datatype

Variable : A variable is a named storage location where you can store different values.

Primitive variables : int, float, double, long, char , byte , boolean 

Datatype : Type of data store in a variable is called datatype

You can't store large value in small variable.

Different types of variable with their size and default values

class Add

{

public static void main(String args[])

{

System.out.println(1+2);

int a=3;

int b=5;

System.out.println(a+b);

float p=3.4f;

float q=3.5f;

System.out.println(p+q);

char j='A';

System.out.println(j);

System.out.println((int)j);

int t=78;

System.out.println(t);

System.out.println((char)t);

}

}

Precision