Constructor

Constructor

                              A  constructor initialize an object immediately after object creation.it is called constructor.it doesnt have return type.it should have the same name as the class.
             
             It is similar tomethod with or without argument.it is called immediately after object creation.

Example

       class first
       {
            int x;
            int y;
           first()
           {
                  x=10;y=10;
           }
           int calc()
           { 
                 return x*y;
           }
                  }
                 class mainPrg
       {
          public static void main(String args[])
          {
              first f=new first();

                                    f.calc();
          }
       }

why we need construtor?

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