Game类:模板类,其中规定了游戏执行的顺序,而且play方法使用final修饰,这样子类无法更改
package com.study.dp.template; public abstract class Game { abstract void initialize(); abstract void startPlay(); abstract void endPlay(); // 模板 public final void play() { // 初始化游戏 initialize(); // 开始游戏 startPlay(); // 结束游戏 endPlay(); } }Cricket类:具体实现类之一 package com.study.dp.template; public class Cricket extends Game { @Override void initialize() { System.out.println("Cricket Game Initialized! Start playing."); } @Override void startPlay() { System.out.println("Cricket Game Started. Enjoy the game!"); } @Override void endPlay() { System.out.println("Cricket Game Finished!"); } }Football类:具体实现类之二 package com.study.dp.template; public class Football extends Game { @Override void initialize() { System.out.println("Football Game Initialized!Start playing."); } @Override void startPlay() { System.out.println("Football Game Started. Enjoy the game!"); } @Override void endPlay() { System.out.println("Football Game Finished!"); } }Demo类:测试类 package com.study.dp.template; public class Demo { public static void main(String[] args) { Game game = new Cricket(); game.play(); System.out.println(); game = new Football(); game.play(); } }