StrategyPattern (策略模式)

/**
 * 策略模式
 * @author TMAC-J
 * 根据环境的不同选择不同的策略,把策略用接口抽象出来
 */
public class StrategyPattern {
    
    interface Strategy{
        void operate();
    }
    
    public class StrategyA implements Strategy{

        @Override
        public void operate() {
            System.out.println("策略A");
        }
        
    }
    
    public class StrategyB implements Strategy{
        
        @Override
        public void operate() {
            System.out.println("策略B");
        }
        
    }
    
    public class Context{
        
        private Strategy strategy;
        
        public Context(Strategy strategy) {
            this.strategy = strategy;
        }
        
        public void operate(){
            strategy.operate();
        }
        
    }
    
    public void test(){
        Context context1 = new Context(new StrategyA());
        context1.operate();
        Context context2 = new Context(new StrategyB());
        context2.operate();
    }
    
}

 

posted @ 2016-12-28 17:30  麦子TMAC  阅读(142)  评论(0编辑  收藏  举报