阅读下列代码，写出运行结果。

class Instrument {

  public void play() {

    System.out.println("Instrument.play()");

  }

}

class Wind  extends  Instrument {

  public void play() {

    System.out.println("Wind.play()");

  }

}

public class Music {

  public static void tune(Instrument  k ) {

    k.play();

  }

  public static void main(String[] args) {

    Wind flute = new Wind();

    tune(flute); 

  }

}