At 12:05 PM 5/30/2002 +0530, you wrote:
>Hello all,
>
> Could any body of you explain me with an example what is meant by
>Polymorphism.....I went through many sites,,but it is bit confusing and not clear...
>
>Thanks and regards,
>
>Santosh
take a look at this:
public class
Animal {
public void makeNoise() {
System.out.println("what am I supposed to say?");
}
}
public class
Dog extends Animal {
public void makeNoise() {
System.out.println("woof");
}
}
public class
Cat extends Animal {
public void makeNoise() {
System.out.println("meow");
}
}
public class
AnimalTest() {
public static void
main(String[] args) {
Animal
a1 = new Dog(),
a2 = new Cat();
a1.makeNoise();
a2.makeNoise();
}
}
The output, obviously is:
woof
meow
This is polymorphism in action.
You have 2 Animal references (a1 & a2). But the behavior of these objects depends not
on the declared type of the references (Animal), but upon the actual type of the
objects (Dog and Cat).
That's polymorphism. So in a nutshell, polymorphism basically means that objects of
the same interface/type exhibit different behavior depending on their actual subclass
type.
HTH.
DR
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