java - 如何检查对象是否实现了接口(interface)？

Question

如何检查某个类是否实现了接口(interface)？ 当有:

Character.Gorgon gor = new Character.Gorgon();

如何判断gor是否实现Monster接口(interface)？

public interface Monster {

    public int getLevel();

    public int level = 1;
}

public class Character {
    public static class Gorgon extends Character implements Monster {
        public int level;
        @Override
        public int getLevel() { return level; }

        public Gorgon() {
            type = "Gorgon";
        }
    }
}

---

Gorgon中的getLevel()方法是否正确覆盖，所以可以返回新gor的level创建？

Answer 1

举个例子

Character.Gorgon gor = new Character.Gorgon();

那就做吧

gor instanceof Monster

对于一个类实例做

Class<?> clazz = Character.Gorgon.class;
Monster.class.isAssignableFrom(clazz);