Enums – using values

• public enum Color { RED, YELLOW, GREEN }

• public class TrafficLight {

• • private Color color;
  • public TrafficLight(Color c) {
  • this.color = c;
  • }
  • public void setColor(Color newColor) {
  • color = newColor;
  • }

• }

• TrafficLight li = new TrafficLight(Color.RED);

• // but not

• TrafficLight li = new TrafficLight(2);