求答案!!! 定义一个类BallBoy,继承People,实现PlayBall接口,自己的属性有ballteamName。重写toString()方法。 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 package com.cn;class People{ public String myToString() { return this.toString(); }}public class BallBoy extends People{ private String ballteamName; public String getBallteamName() { return ballteamName; } public void setBallteamName(String ballteamName) { this.ballteamName = ballteamName; } public String myToString() { return this.toString(); }} 修改上面的package com.cn;interface PlayBall{ public String myToString();}class People{ public String myToString() { return this.toString(); }}public class BallBoy extends People implements PlayBall{ private String ballteamName; public String getBallteamName() { return ballteamName; } public void setBallteamName(String ballteamName) { this.ballteamName = ballteamName; } public String myToString() { return this.toString(); }} KTV系统是什么技术开发的? 新手遇到小问题 很简单的文件读操作问题 用java怎么处理多级部门的显示 【在线等】Tomcat服务器线程满宕机问题(跪求解决方法) 问一个让我郁闷一整天的问题!!! 很菜很菜的鸟问个问题希望大家帮个忙哈 对String进行类似数据库的模糊查询!!!请高手指教!! [求解]:实现一个JPanel 相对于另外一个JPanel 定位 深入了解java xml和数据库,该如何选择~ 将一个mp3文件打进jar包后,如何播放?
package com.cn;class People
{
public String myToString()
{
return this.toString();
}
}public class BallBoy extends People
{
private String ballteamName;
public String getBallteamName()
{
return ballteamName;
}
public void setBallteamName(String ballteamName)
{
this.ballteamName = ballteamName;
}
public String myToString()
{
return this.toString();
}
}
{
public String myToString();
}
class People
{
public String myToString()
{
return this.toString();
}
}public class BallBoy extends People implements PlayBall
{
private String ballteamName;
public String getBallteamName()
{
return ballteamName;
}
public void setBallteamName(String ballteamName)
{
this.ballteamName = ballteamName;
}
public String myToString()
{
return this.toString();
}
}