用Java实现以下编程！

1）编写Animal接口，接口中声明run()方法、（2）定义Bird类和Fish类实现Animal接口，Bird类实现的run()方法输出：Iamflying，Fish类实现的run()方法输出：Iamswimming。（3）编写Bird类和Fish类的测试程序，并调用其中的run()方法。

package Action;

public interface Animal {
    public void run();
}

package Action;

public class Bird implements Animal {

    @Override
    public void run() {
        // TODO Auto-generated method stub
        System.out.println("Iamflying");
    }

}

package Action;

public class Fish implements Animal {

    @Override
    public void run() {
        // TODO Auto-generated method stub
        System.out.println("Iamswimming");
    }

}

package Action;

public class test {
    public static void main(String[] args) {
        Bird bird = new Bird();
        bird.run();
        Fish fish = new Fish();
        fish.run();
    }
}

共计4个文件，创建一个【Action】包放进去就行。
希望采纳。