Question

[JAVA] implement an abstract class that has a construtor which prints "This is constructor of abstract class", an abstract method named 'a_method' and a non-abstract method which prints "This is a normal method of abstract class". A class 'SubClass' inherits the abstract class and has a method named 'a_method' which prints "This is abstract method". Now create an object of 'SubClass' and call the abstract method and the non-abstract method.

Answer 1

Code

public class Temp {

    public static void main(String[] args) {

        B b = new B();

        b.a_method();

        b.nonAbstract();

    }

}

abstract class A{

    A(){

        System.out.println("This is constructor of abstract class");

    }

    abstract void a_method();

    void nonAbstract(){

        System.out.println( "This is a normal method of abstract class");

    }

}

class B extends A{

    @Override

    void a_method() {

        System.out.println("This is abstract method");

    }

}