编写IFly接口,接口中声明fly( ) 方法; (2)定义Plane类实现IFly接口,显示“飞机在飞”;

编写一个完整的Java程序,要求:
(1)编写IFly接口,接口中声明fly( ) 方法;
(2)定义Plane类实现IFly接口,显示“飞机在飞”;
(3)定义Spadger类实现IFly接口,显示“麻雀在飞”;
(4)编写主类Test,在主方法中,创建Plane类和Spadger类的实例,并调用fly( )方法

```interface IFLY {
void fly();
}

class Plane implements IFLY{

@Override
public void fly() {
    // TODO Auto-generated method stub
    System.out.println("飞机在飞");
}

}
class Spadger implements IFLY{

@Override
public void fly() {
    // TODO Auto-generated method stub
    System.out.println("麻雀在飞");
}

}

public class Test {

public static void main(String[] args) {
    // TODO Auto-generated method stub
    Plane plane =new Plane();
    Spadger spadger =new Spadger();
    plane.fly();
    spadger.fly();
}

}