模板模式

abstract class Game {
    abstract public void play_initialize();
    abstract public void int_playing();
    abstract public void play_finish();
    /*使用final关键字限制子类重写该方法*/
    public final void play() {
        play_initialize();
        int_playing();
        play_finish();
    }
}

class Football extends Game {
    public void play_initialize() {
        System.out.println("Begin play football");
    }
    public void int_playing() {
        System.out.println("In playing football");
    }
    public void play_finish() {
        System.out.println("After play football");
    }
}

class Basketball extends Game {
    public void play_initialize() {
        System.out.println("Begin play Basketball");
    }
    public void int_playing() {
        System.out.println("In playing Basketball");
    }
    public void play_finish() {
        System.out.println("After play Basketball");
    }
}

public class TemplatePatternDemo {
    public static void main(String args[]) {
        Game football = new Football();
        football.play();

        Game basketball = new Basketball();
        basketball.play();
    }
}