设计模式——策略模式

最新修改已更新到github

策略模式_整体的替换算法(把具体算法封装到不同子类，通过实现不同算法的替换)用

/**
 * 策略类
 * @author maikec
 * @date 2019/5/13
 */
public interface Strategy {
    /**
     * say策略
     */
    void say();
}

/**
 * @author maikec
 * @date 2019/5/13
 */
public class ChineseStrategy implements Strategy {
    @Override
    public void say() {
        System.out.println( "Chinese haha" );
    }
}

/**
 * @author maikec
 * @date 2019/5/13
 */
public class EnglishSayStrategy implements Strategy{
    @Override
    public void say() {
        System.out.println( "English haha" );
    }
}

/**
 * @author maikec
 * @date 2019/5/13
 */
public final class Context {
    private final Strategy strategy;
    public Context(Strategy strategy){
        this.strategy = strategy;
    }
    public void sayStrategy(){
        strategy.say();
    }
}

/**
 * @author maikec
 * @date 2019/5/13
 */
public class StrategyDemo {
    public static void main(String[] args) {
        if (null != args && args.length > 0){
            if ("English".equals( args[0] )){
                new Context( new EnglishSayStrategy() ).sayStrategy();
            } else {
                new Context( new ChineseStrategy() ).sayStrategy();
            }
        }
    }
}

附录

github.com/maikec/patt… 个人GitHub设计模式案例

声明

引用该文档请注明出处