Late Binding

[Roger Chan]

Hi all,
class Base
{
void methodA()
{
System.out.println("base - MethodA");
}

}
class TestBinding extends Base
{
public void methodA()
{
System.out.println("sub - MethodA");
}

public void methodB()
{
System.out.println("sub - MethodB");
}

public static void main(String args[])
{
Base b=new TestBinding(); //1
b.methodA(); //2
b.methodB(); //3
}
}
There is a compile error at //3. (cannot resolve symbol) Can anybody explain what that mean? methodB is available as one of the members of TestBinding class. I am not sure why it will cause compile error.
Thanks

[jariwala_b]

Here case is OverRidding Method :
OverRidding method take place as follow sequesnce :
1. see in ref type whether method def. is there or not.
2.if method is there in base class then it will look
in sbclass type for that method and if it is there(overridden)
it will executed otherwise inherited method in subclass
is executed.
in your case there is no mehtod is there refer at line 3.
so compiler complaint at compile time.

[Valentin Crettaz]

jariwala_b
Please read the Javaranch Naming Policy and register again.
Thank you for your cooperation

------------------
Valentin Crettaz
Sun Certified Programmer for Java 2 Platform