first i will explain in a easy way about the overridding to change the functionality of a particular method in every child class compare to the parent class for example.. you want to prepare a biryani.. in parent class(Home,House) their a simple casual method to prepare biryani but in every child class(different restaurants) means in every restaurant they follow their own methodology compare to home recipe means parent class.. code in java for method overridig.. public class BiryaniH { public void prepare() { System.out.println("biryani is ready"); } } public class RestaurantOne extends BiryaniH { public void prepare() { System.out.println("biryani is ready at R1"); } } public class RestaurantTwo extends BiryaniH { void public void prepare() { System.out.println("biryani is ready at R2"); } } public class TestBiryni { public static void main(String args[]) { RestaurantOne obj1 = new RestaurantOne(); obj1.prepare(); RestaurantTwo obj2 = new RestaurantTwo(); obj2.prepare(); } }

java is like a big world.we are very attached to our real life.if we can correlate the real world to java,,so when we are going to solve a particular problem..it is very easy to solve using java,, for example,, how to prepare upma this is a problem?? then the ingredients are variables in a class and the preparation of instructions are going to be methods and stove is the constructor and cylinder is java platform and the gas is jvm that's is simple... finally to code for any problem java is the best platform after that dotnet framework..