QN038. Create a class foam class which is extending from Wood class and create Duster class which extend from wood class and implement.

---

1. Objective

To create a class foam class which is extending from wood class and create Duster class which extend from wood class.

2. Theory

When two or more classes inherits a single class, it is known as hierarchical Inheritance. In this program Foam and Duster class inherits Wood.

3. Source Code

class Wood{
void create(){
System.out.println("Wood is created..");
}
}

class Foam extends Wood{
void insert(){
System.out.println("Foam inserted..");
}
}

class Duster extends Wood{
void apply(){
System.out.println("Wood applied..");
}
}

public class Qn038{
public static void main(String[] args){
Duster d = new Duster();
d.create();
d.apply();
//d.insert();//compile time error
}
}


4. Output

Wood is created..
Wood appled..

5. Conclusion

In this way, I would like to conclude that we can also inherits class in hierarchical way but we can not access methods from sub classes from object of subclass.