小编use*_*682的帖子

我在oracle网站上学习过Java.在那,我看到了这样的例子

public class Horse {
   public String identifyMyself() {
      return "I am a horse.";
   }
}
public interface Flyer {
   default public String identifyMyself() {
       return "I am able to fly.";
   }
}
public interface Mythical {
   default public String identifyMyself() {
       return "I am a mythical creature.";
   }
}
public class Pegasus extends Horse implements Flyer, Mythical {
   public static void main(String... args) {
       Pegasus myApp = new Pegasus();
       System.out.println(myApp.identifyMyself());
   }
}

我能写这样的界面吗？我希望我只能在界面中编写抽象函数.那么为什么在oracle网站上他们给出了这样的例子呢？