extends_Keyword

妖狐艹你老母 2021-11-05 08:30 230阅读 0赞

extends Java Keyword with Examples

The extends keyword is used in a class or interface declaration to indicate that the class or interface being declared is a subclass of the class or interface whose name follows the extends keyword.

### extends Java Keyword Examples ###

In below example, we have created Animals superclass and Dog and Cat subclasses extends an Animals superclass.

abstract class Animals {
        /** All kind of animals eat food so make this common to all animals. */
        public void eat() {
            System.out.println(" Eating ..........");
        }
    
        /** The make different sounds. They will provide their own implementation */
        abstract void sound();
    }
    
    class Cat extends Animals {
        @Override
        void sound() {
            System.out.println("Meoww Meoww ........");
        }
    }
    
    class Dog extends Animals {
        @Override
        void sound() {
            System.out.println("Woof Woof ........");
        }
    }
    Note that interface can extends other interfaces like:
    public interface A{
    }
    
    public interface B extends A {
    }

extends_Keyword

发表评论取消回复

还没有评论，来说两句吧...

相关阅读