public classLiuBei {

    IStrategyiStrategy;

    public voidsetiStrategy(IStrategy iStrategy) {
        this.iStrategy= iStrategy;
    }

    publicString dispatch(String... generals){
        returniStrategy.dispatch(generals);
    }

}

public interfaceIStrategy {

    /**
     * 派遣将军执行计划
     *@paramgenerals将军
     *@return
     */
    String dispatch(String... generals);

}

public classGoodStrategyimplementsIStrategy {
    @Override
    publicString dispatch(String... generals) {
        String goodStrategy ="派";

        for(String general:generals){
            goodStrategy += ("、"+ general);
        }

        goodStrategy = goodStrategy.replaceFirst("、","");
        goodStrategy +="只今便选精兵，昼夜兼道径袭成都";

        returngoodStrategy;
    }
}

public classMiddleStrategyimplementsIStrategy {
    @Override
    publicString dispatch(String... generals) {
        String middleStrategy ="派";

        for(String general:generals){
            middleStrategy += ("、"+ general);
        }

        middleStrategy = middleStrategy.replaceFirst("、","");
        middleStrategy +="先取涪城，然后却向成都";

        returnmiddleStrategy;
    }
}

public classBadStrategyimplementsIStrategy {
    @Override
    publicString dispatch(String...generals) {
        String badStrategy ="派";

        for(String general:generals){
            badStrategy += ("、"+ general);
        }

        badStrategy = badStrategy.replaceFirst("、","");
        badStrategy +="退还白帝，连夜回荆州，徐图进取";

        returnbadStrategy;
    }
}

LiuBei liuBei =newLiuBei();
liuBei.setiStrategy(newMiddleStrategy());
Log.e("玄德犹有不忍之心",liuBei.dispatch("黄忠","魏延"));