1．实现如下类之间的继承关系，并编写Music类来测试这些类。
父类：
package com.lianxi;
public class Instrument {
//属性
private String yueqi;
public String getYueqi() {
return yueqi;
}
public void setYueqi(String yueqi) {
this.yueqi = yueqi;
}
//构造方法
public Instrument(String yueqi)
{
this.yueqi=yueqi;
}
public Instrument() {
super();
}
//成员方法
public void play()
{
System.out.println("弹奏乐器名称："+yueqi);
}
}
package com.lianxi;
public class Brass extends Instrument {
//方法重写
public void play()
{
System.out.println("弹奏Brass");
}
public void play2()
{
System.out.println("调用Barss的play2");
}
}
package com.lianxi;
public class Wind extends Instrument {
//方法重写
public void play()
{
System.out.println("弹奏Wind");
}
public void play2()
{
System.out.println("调用Wind的play2");
}
}
测试：
package com.lianxi;
public class Music {
public static void main(String[] args) {
Instrument ins=new Instrument();
tune(ins);
Wind w=new Wind();
Brass b=new Brass();
w.play();
w.play2();
b.play();
b.play2();
}
public static void tune(Instrument i)
{
i.setYueqi("吉他");
i.play();
System.out.println(i.getYueqi());
}
结果：