接口4

1 public interface CanSwim {
2
3     void Swim();
4 }

1 public interface CanFly {
2
3     void Fly();
4 }

 1 public class Hero extends ActionCharacter implements CanSwim, CanFly {
 2
 3     String name;
 4
 5     Hero(String name) {
 6         this.name = name;
 7     }
 8
 9     @Override
10     public void Fly() {
11         System.out.println(this.name + "会飞。");
12
13     }
14
15     @Override
16     public void Swim() {
17         System.out.println(this.name + "会游泳。");
18
19     }
20
21 }

 1 public class Adventure {
 2
 3     public static void main(String[] args) {
 4         Hero hb = new Hero("张三");
 5         hb.Swim();
 6         hb.fight("");
 7         hb.Fly();
 8
 9         CanFly cf = new Hero("李四");
10         cf = hb;
11         cf.Fly();
12
13         CanSwim cs = new Hero("王五");
14         cs = hb;
15         cs.Swim();
16
17         ActionCharacter ac = new Hero("马六");
18         ac = hb;
19         ac.speak("大家跟我一起战斗！");
20         ac.fight("发射！");
21     }
22
23 }

结果：