package polymophism;

public class Human {

    public void eat() {
        System.out.println("Human eat");
    }

}

public class Woman extends Human {
    public void eat() {
        System.out.println("Woman eat");
    }
}

public class Man extends Human {
    public void eat() {
        System.out.println("Man eat");
    }
}

public class Tester {

    public static void main(String[] args) {
        Woman w = new Woman();
        Man m = new Man();
        Human hm = new Man();
        Tester tester = new Tester();
        tester.eat(m);
        tester.eat(hm);
        tester.eat(w);
    }

    private void eat(Human h) {
        h.eat();
    }

}