package polymophism;

public interface Action {
    public void eat();

}

public class Tester {

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

    private void eat(Action m) {
        m.eat();
    }

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