Thread: Doubt with overloading...in Generics(Urgent)

I have confusion with below code...

which of them are valid inserts?
class Parent<E>
{
public E get() { return null;}
public void set(E e) { }
}
class Child extends Parent<Number>
{
//insert here
}

options given to insert are

a public Object get() { ... }
b public Long get() { ... }
c public void set(Object arg) { ... }
d public void set(Long arg) { ... }
e public Number get() { ... }


and ans is b,d,e.Iam fine with it.

But i have confusion with option c.Why "option c" is wrong?In option c,
we hava "Object arg" as argument, so isn't it a valid overloading example?


see here their is a statement in above code "class child extends Parent<Number> ".
Therefore
set(E e) of Parent class should be "set(Number e), "

and in child class if we have option c, which is set(Object e), then what is wrong in it?Wont it be a vaild overloading example.