【设计模式与Android】责任链模式——曹瞒兵败走华容

public abstract class General {

    protected General nextGeneral;

    /**
     * 姓名
     */
    public abstract String getName();

    /**
     * 武力
     */
    public abstract int getForce();

    /**
     * 拦截曹操
     * @param force 曹操手下将军能拿出来的最高武力
     */
    public final void tryCaoCao(int force){
        if (force <= getForce()){
            catchCaoCao();
        }else{
            if (nextGeneral != null){
                nextGeneral.tryCaoCao(force);
            }
        }
    }

    /**
     * 有能力抓获曹操
     */
    public void catchCaoCao(){
        Log.e("曹操无路可逃","曹操兵败走华容，正与" + getName() + "狭路逢。只为当初恩义重，放开金锁走蛟龙。");
    }

}

public class ZhaoYun extends General {
    @Override
    public String getName() {
        return "赵云";
    }

    @Override
    public int getForce() {
        return 95;
    }
}

public class ZhangFei extends General {
    @Override
    public String getName() {
        return "张飞";
    }

    @Override
    public int getForce() {
        return 97;
    }
}

public class GuanYu extends General {
    @Override
    public String getName() {
        return "关羽";
    }

    @Override
    public int getForce() {
        return 100;
    }
}

ZhaoYun zhaoYun = new ZhaoYun();
ZhangFei zhangFei = new ZhangFei();
GuanYu guanYu = new GuanYu();

zhaoYun.nextGeneral = zhangFei;
zhangFei.nextGeneral = guanYu;

zhaoYun.tryCaoCao(99);