Abstract In Interface Java Code Example

Example 1: abstract classes and interfaces in java

abstract class have no implementation of methods functions inside it. the classes which extending abstract class have to implement it

Example 2: abstract class example in java

//abstract parent class abstract class Animal{    //abstract method    public abstract void sound(); } //Dog class extends Animal class public class Dog extends Animal{     public void sound(){ 	System.out.println("Woof");    }    public static void main(String args[]){ 	Animal obj = new Dog(); 	obj.sound();    } }