abstract public class Animal {

    public int nLegs = 0;
    public void numLegs(int nLegs) {
        this.nLegs = nLegs;
    }


    public abstract int getLegs();

    //Constructor
    public Animal (int nLegs) {
        numLegs(nLegs)
    }
}

public class Monkey extends Animals {

    public int getLegs(){
        return this.nLegs;
    }
    public monkey(){
        super(2);
    }

    public void saySome(){
        System.out.println("Hello, I am a monkey!");
    }

}

public class MainClass{

     public static void main(String []args){

        Animal jay = new Monkey ();
        System.out.println(jay.nLegs);

       /* jay.saySome()*/
        ((Monkey) jay).saySome();

     }
}