abstraction4.java

abstract class Bike{
    Bike(){System.out.println("bike is created");
    }
    abstract void run();
    void changeGear(){System.out.println("gear is changed");}
}

class Honda extends Bike{
    void run(){System.out.println("running safely");}
}

class TestAbstraction2{
        public static void main(String args[]){
            Bike obj=new Honda();
            obj.run();
            obj.changeGear();
        }
}