package com.lianxi;
public class Instrument {
public void play()
{
System.out.println("弹奏乐器");
}
}
package com.lianxi;
public class Wind extends Instrument {
public void play()
{
System.out.println("弹奏Wind");
}
public void play2()
{
System.out.println("调用Wind的play2");
}
}
package com.lianxi;
public class Brass extends Instrument {
public void play()
{
System.out.println("弹奏brass");
}
public void play2()
{
System.out.println("调出brass的play2");
}
}
package com.lianxi;
public class Music {
//调用对象I的play
public static void tune(Instrument i)
{
i.play();
}
public static void main(String[] args) {
// TODO 自动生成的方法存根
//调用turn方法，以Wind类对象为参数
Wind w=new Wind();
tune(w);
//调用turn方法，以Brass类对象为参数
Brass b=new Brass();
tune(b);
}
