Method question !!

[gabriele rigamonti]

Hello my question.
considering the code :

class A {void m1(A a) {System.out.print("A");}}
class B extends A {void m1(B b) {System.out.print("B");}}
class C extends B {void m1(C c) {System.out.print("C");}}
class D {
public static void main(String[] args) {
A c1 = new C(); C c2 = new C(); c1.m1(c2);
}}
prints A!
c1 is the reference to the class C also if the type of c1 is A;
so i know that the invoked method is m1 of class C and the result i believed was C instead of A.
Thanks in advance.

Sorry for my languages
Gabriele

[Ko Ko Naing]

Ur object "c1" is of type A, so it has access to all methods in class A... Is that not clear? If so, just tell us ur doubt on it... We will solve it as much as we can....

[Amir Kamran]

hello!
what i understand is that ... ur doing overloading here not overriding ... so your methods will not show polymorphism
when u call
c1.m1(c2)
here c1 is of type A and the passing argument is of type C
and because in m1(A a) of class A, an instance of C can be passed in m1(A a) as C is a subclass of A
so it prints A

[Philippe Maquet]

Hi Gabriele,
Welcome to JavaRanch.

Sorry for my languages.

I really appreciated your previous post where you were looking for italian guys. JR is a place where you'll find people coming from all parts of the world (Italy included ) who share a passion : Java.
The common language we use to understand each other here is English. And yours is very understandable.
BTW, far better than your code snippet !
JavaRanch uses UBB codes to help us in formatting our messages. The tag used for code formatting is "CODE".
For your convenience, here is the list of UBB codes.
Best,
Phil.
[ December 17, 2003: Message edited by: Philippe Maquet ]

[Don Wood]

Gabriele,
I was confused about the same question. Marlene Miller explained it pretty clearly so I'll refer you to her response to my question.
The link is here

[gabriele rigamonti]

Now is Clear!!
Thanks!!
Gabriele