Inheritance :Displaying which class inherits which

Question

I am new to Java and was learning inheritance concept.The question is very simple. If one of my class inherits a method from other how can I display that it was inherited by classX?

public class class1 extends ClassPname {
    public static void main (String[] args){
        className obj3=new className();
        class1 obj2=new class1();
        obj3.Name();
        obj2.Name();
    }
}

This is the ClassPname code:

public class ClassPname {
    public void Name(){
        System.out.println("I am players name ;Succesfully inherited  by ");
    }
}

The final output is:

I am players name ;Succesfully inherited by

I am players name ;Succesfully inherited by

My desired output :

I am players name ;Succesfully inherited by(class that inherits this)

I am players name ;Succesfully inherited by (Class that inherits this)

Use: [`Class.getName()`](http://docs.oracle.com/javase/7/docs/api/java/lang/Class.html#getName%28%29) — Blasanka, Jun 22 '17 at 13:37
Also [https://stackoverflow.com/questions/5679254/all-super-classes-of-a-class](https://stackoverflow.com/questions/5679254/all-super-classes-of-a-class) — domsson, Jun 22 '17 at 13:37
thanks @domdom but the answer got me more confused..Now its cleared..thanks a lot. — AnishDhoni, Jun 22 '17 at 13:43

nikita_pavlenko · Accepted Answer · 2017-06-22T13:52:25.750

1

It can be easily taken by getClass().getSuperclass()

public class DemoApplication {

    public static void main(String[] args) {
        Class<?> superclassOfB = new B().getClass().getSuperclass();
        Class<?> superclassOfA = new A().getClass().getSuperclass();
        System.out.println(superclassOfB);
        System.out.println(superclassOfA);
    }

    static class A {

    }

    static class B extends A {

    }
}

The output is following:

class com.example.demo.DemoApplication$A
class java.lang.Object

So it means if you write extends it has an explicit parent class, but at the same time in the top of hierarchy java.lang.Object is located. So if you don't use extends for you class this class has java.lang.Object as a parent class by default.

edited Jun 22 '17 at 13:52

answered Jun 22 '17 at 13:39

nikita_pavlenko

658
3
11

There is no need to use `super.getClass`, `this.getClass` is sufficient. – Mark Rotteveel Jun 22 '17 at 13:40
@nikita_pavlenko thank you so much for the help.I exactly wanted this.lots of love...:) – AnishDhoni Jun 22 '17 at 13:41
@Mark Rotteveel thanks for the clarification too..so whats the difference between those two? – AnishDhoni Jun 22 '17 at 13:42
@AnishDhoni `super.getClass()` will give the parent class (`ClassPname ` if calld from `class1`) , `this.getClass()` will give you the "actual" instance's class ( `class1`) – C.Champagne Jun 22 '17 at 13:48
thanks @C.Champagne super and this are more than helpful and important than i thought.:p – AnishDhoni Jun 22 '17 at 14:01

Inheritance :Displaying which class inherits which

1 Answers1