WHAT IS THE DIFFERENCE BETWEEN METHOD OVERLOADING AND METHOD OVERRIDING..?

    INTRODUCTION:

         Helooooo folks.. In this tutorial I am going to explain about method overriding and difference between method overloading and method overriding

   WHAT METHOD OVERRRIDING ACTUALLY IS..?

        Method overriding actually comes into life when the inheritance concepts comes into being..!! If you don’t know what inheritance actually mean ..please refer here for the detailed post Inheritance in java

    WHAT DOES A METHOD ACTUALLY RIDES..?

        When a  sub class actually contain same return type, same parameters, same  name etc then that method is said to override the SUPER CLASS method..

      Ok ..I don’t want to confuse more with technical terms..let me explain with an example..

    Class Dad

       {

           String color = “white”;

           String haricolor= “black”;

           public void Smartness( )

            {

               System.out.println(“ I am dad and I am smart ;) “);

            }

           public void Diabetes( )

             {

                  System.out.println(“ Ooops.. I am dad and I have diabetes” );

             }

       }

    Class Son extends Dad

      {

          String Height = “tall”;

          public void Smartness( )

           {

                System.out.println(“ I am dad and I am smart ;) “);

           }

          public void swimming ( )

           {

               System.out.printlln(“Hieeee..I am the son and I know swimming “);

          }

       public static void main(String args[])

         {

             Son Sonobj = new Son ( ) ;

             Sonobj.swimming( );

             Sonobj.Smartness( );

         }

   }

 OUTPUT:

      Hieeee..I am the son and I know swimming

      I am SON and I am smart ;)

  EXPLANATION:

          Here dad is the Super class and Son is the sub class.. You can see.. the sub class SON is having the same method as the super class  and when we call the Smartness method then it calls the method in the Son class and not the Dad class. 

        This is because “SMARTNESS method has overridden the method in the super class” and so this method is called.. !!

        But what if we want to call the SMARTNESS method in the SUPER CLASS ?

     IS THERE ANY WAY TO CALL THE SMARTNESS METHOD IN SUPER CLASS??

             Of course it’s a big ssssss !! We can call the method in the super class using the keyword “SUPER” 

       Wow.. its really SUPER.. !! nah ;) 

      HOW TO USE SUPER KEYWORD..?

       Considering the same example as above.. but extra only one keyword is added.. Look at  the Smartness method in the Son class..

     Class Dad

        {

          String color = “white”;

          String haricolor= “black”;

          public void Smartness( )

           {

               System.out.println(“ I am dad and I am smart ;) “);

           }

          public void Diabetes( )

           {

              System.out.println(“ Ooops.. I am dad and I have diabetes” );

          }

   }

      Class Son extends Dad

      {

         String Height = “tall”;

         public void Smartness( )

          {

             System.out.println(“ I am SON and I am smart ;) “);

             Super.Smartness( );

           }

          public void swimming ( )

           {

              System.out.printlln(“Hieeee..I am the son and I know swimming “);

           }

        public static void main(String args[])

           {

                 Son Sonobj = new Son ( ) ;

                 Sonobj.swimming( );

                 Sonobj.Smartness( );

          }

   }

  OUTPUT:

       Hieeee..I am the son and I know swimming

       I am SON and I am smart ;)

       I am dad and I am smart ;)

 EXPLANATION:

         Look at the example above..by using “SUPER.SMARTNESS( ) “ .. the smartness( ) method of the DAD class is called and printed.

       So only way of accessing the super class method if the method is overridden ie. if the same method is present in the sub class with the same type .. etc then it can be done using SUPER KEYWORD.

     CONCLUSION:

So that’s it for this post. Hope you understood the concepts better.. !! Hit like button ..share the post..drop your comments below..It will help me to post more !!  Suggestions and request for post you wish is welcomed.. Have a peaceful day :)