package com.hanqi.test;

public class Instrument {

    //输出弹奏乐器

    public void play()

    {

        System.out.println("弹奏乐器");

    }

}

package com.hanqi.test;

public class Wind extends Instrument {

    //弹奏wind

    public void play()

    {

        System.out.println("弹奏wind");

    }

    //调用wind的play2

    public void play2()

    {

        System.out.println("调用wind的play2");

    }

}

package com.hanqi.test;

public class Brass extends Instrument {

       //弹奏Brass

        public void play()

        {

            System.out.println("弹奏Brass");

        }

        //调用Brass的play2

        public void play2()

        {

            System.out.println("调用Brass的play2");

        }

}

package com.hanqi.test;

public class Music {

    public static void main(String[] args) {

        Instrument i=new Instrument();

        i.play();

        Wind w=new Wind();

        w.play();

        w.play2();

        Brass b=new Brass();

        b.play();

        b.play2();

    }

}