Answer Posted / vijayakumar chinnasamy

Method overrrideing is the runtime polymorphism.The
class's "object" only determine which method to called .
eg:
class SuperClassTest
{
public void display(){
System.out.println("Super class");
}
}
class SubClassTest extends SuperClassTest
{
public void display(){
System.out.println("Sub class");
}
}
public class TestPro {



public static void main(String[] args) {

SuperClassTest sub=new SubClassTest();
System.out.print("I am Calling
subclasstest's display() method: ");
sub.display();

SuperClassTest sup=new SuperClassTest();
System.out.print("I am Calling
superclasstest's display() method: ");
sup.display();
}

}


o/p:

I am Calling subclasstest's display() method: Sub class
Note: object is type of SubClassTest
I am Calling superclasstest's display() method: Super class
Note: object is type of SuperClassTest

Note:
Method overloading is compile time polymorphism.The
class "reference" type determine which method to be called.

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