variables

A simple introduction to the variables in a programming language


Today i will write about the variables in a programming language.

There are two types of variables
          1.Primitive variables
          2.Reference Variables

1.Primitive Variables
  • byte                   
  • short
  • int
  • long
  • float
  • double
  • boolean
  • char

a simple programme to get an idea about primitive variables.

Example 1 -

public class Test1{
       public static void main(String args[]){
           int x; // declare a int type variable(variable name is x)

           x=10; // initialize the variable x to value 10
           System.out.println("The value of the x :"+x);

           x=20; // reinitialize the variable
           System.out.println("The value of the x :"+x);
       }
}

Out put of the programme -
                             The value of the x :10
                             The value of the x :20

I think you get a simple idea about variables by the use of above programme.
Then let's we a see a another simple java programme based on variables.

Example 2-

public class Test2{
       public static void main(String args[]){
           int x=20;
           int y=5;
           System.out.println("Addition :"+(x+y));
           System.out.println("Subtraction :"+(x-y));
           System.out.println("Multiplication :"+(x*y));
           System.out.println("Division :"+(x/y));
       }
}

Out put of the programme -
                     Addition :25
                     Subtraction :15
                     Multiplication :100
                     Division :4

I think you get a some knowledge about Variables.
I will introduce reference Variables using a another post. 


For your more knowledge -
           Compile errors are that occur during the compile time.
           There are also two types
                 1.Syntax Errors
                 2.Grammar Errors

Hope you are enjoy my post.
see you soon.
Thank you. 

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