Abstract class extends Abstract class and Interface extends Interface

Abstract class extends Abstract class

ComicsBook.java

abstract class ComicsBook {

     public abstract void book();

     public abstract void cartoons();

}

abstract class Marvel extends ComicsBook{ //Don’t have to implement any method of ComicsBook even though they are abstract

     public abstract void action();

}

UseAbstract.java

public class UseAbstract extends Marvel {//Have to implement all method of Marvel means also methods of ComicsBook

    

     @Override

     public void action() {

          // TODO Auto-generated method stub

         

     }

     @Override

     public void book() {

          // TODO Auto-generated method stub

         

     }

     @Override

     public void cartoons() {

          // TODO Auto-generated method stub

         

     };

}

Interface extends Interface 

Comics.java

public interface Comics {

     public void book();

     public void cartoons();

}

DCComics.java

public interface DCComics extends Comics{//Don’t have to implement any method of Comics even though they are abstract

     public void action();

}

UseInterface.java

public class UseInterface implements DCComics {//Have to implement all method of DCComics means also methods of Comics

    

     @Override

     public void action() {

          // TODO Auto-generated method stub

         

     }

     @Override

     public void book() {

          // TODO Auto-generated method stub

         

     }

     @Override

     public void cartoons() {

          // TODO Auto-generated method stub

         

     };

}