abstract class AbstractExp{ abstract void show(); abstract void display(); void show1() { System.out.println("Concreate Method"); } } class Abstractdemo extends AbstractExp{ void show() { System.out.println("Hi"); } void display() { System.out.println("Hello"); } } class Abstract{ public static void main(String a[]){ Abstractdemo demo=new Abstractdemo(); demo.show(); demo.display(); } }