2021_mapd-d » FR_B02

package main;

public class Place {

        private int token;

        public Place(int token) {

                this.token=token;

        }

        public int getToken() {

                return this.token;

        }

        public String toString() {

                return "Place Token : "+token;

        }

        public boolean isEmpty() {

                return (this.token==0);

        }

        public void changeToken(int i) {

                token += i;

        }

        public boolean equals(Object o) {

                if((o instanceof Place) &&(System.identityHashCode(((Place)o))==System.identityHashCode(this))) {

                        return true;

                }

                else {

                        return false;

                }

        }

        public static void main(String[] args) {

                System.out.println("TEST METHODS PLACE");

                System.out.println(" => method isEmpty()");

                Place emptyPlace = new Place(0);

                System.out.println("true : "+emptyPlace.isEmpty());

                Place notEmptyPlace = new Place(2);

                System.out.println("true : "+notEmptyPlace.isEmpty());

                System.out.println(" => method changeToken(int i)");

                Place place3 = new Place(3);

                place3.changeToken(5);

                System.out.println("3 + 5 = "+place3.getToken());

                place3.changeToken(-4);

                System.out.println("8 - 4 = "+place3.getToken());

                System.out.println(" => method equals()");

                Place place1 = new Place(0);

                Place place2 = new Place(0);

                System.out.println("true : "+place1.equals(place1));

                System.out.println("false : "+place1.equals(place2));

        }

}