private & Static

[Tony reedy]

I want to know if I understood the concept correctly.I would appreciate answers for the following questions.
1)private memeber are not visible in subclass .so if we define any method same as super class method then it is a new method in sub class .so it is not overriding.
Are private methods inherited?
2)static methods are hidden in subclass.any sub class method same as super method will be a new method in sub class.so it is not overriding.
Are static methods inherited?

[Brian Lugo]

Tony!
You may want to check this out ...
http://www.javaranch.com/maha/Discussions/Language_Fundamentals/difference_between_static_and_final_method_-_JavaRanch_Big_Moose_Saloon.htm
Brian

[Tony reedy]

Hi brian,
I did go thru many questions in this site.After all this ,I got the above concepts.Correct me if i am wrong.Did I mess up some things.
--also I would appreciate answers for the above questions.
Thanks
Tony

[Dirk Schreckmann]

Hello,
The best way to answer your questions would be to write some code and see what happens.
Good Luck,
-Dirk Schreckmann

[Tony reedy]

i did do some sample programs.I know what will be the out put .what i want to know is ..what will be the answers if a question like
are private members inherited?
are static members inherited?
-thanx

[Marilyn de Queiroz]

1)private memeber are not visible in subclass. so if we define any method same as super class method then it is a new method in sub class. so it is not overriding.

true.

Are private methods inherited?

no.

2)static methods are hidden in subclass. any sub class method same as super method will be a new method in sub class. so it is not overriding.

true.

Are static methods inherited?

Yes, as long as they are not hidden by a new method of the same signature in the sub class and they are not private.
[ March 08, 2002: Message edited by: Marilyn deQueiroz ]

[Uday Kumar]

Finally Tony got the answers he was looking for.

[Dirk Schreckmann]

On the contrary...
Writing some code helps to give us a fuller picture of what's going on.
Marilyn, I'm not explicitly disagreeing with your explanation on inheriting static methods. I contend that static methods are not inherited in every polymorphic sense of inheritance.
Consider:

class A {
    
    void method() {
        System.out.println("class A - method");
    }
    
    static void staticMethod() {
        System.out.println("class A - staticMethod");
    }
    
}

class B extends A {
    
    void method() {
        System.out.println("class B - method");
    }
    
    static void staticMethod() {
        System.out.println("class B - staticMethod");
    }
    
}

import java.applet.Applet;
 
public class StudyStaticMethodShadowing extends Applet {
    
    public void init() {
        
        A a1 = new A();
        
        a1.method();        // prints class A - method
        a1.staticMethod();  // prints class A - staticMethod
        
        A a2 = new B();
        
        a2.method();        // prints class B - method
        a2.staticMethod();  // prints class A - staticMethod
        
        B b = new B();
        
        b.method();         // prints class B - method
        b.staticMethod();   // prints class B - staticMethod
    }
    
}

Good Luck,
-Dirk Schreckmann