设计模式——策略模式

策略模式

>定义一系列的算法,把它们一个个封装起来, 使它们可相互替换。本模式使得算法可独
>立于使用它的客户而变化。

IStrategy 抽象策略

public interface IStrategy {
    void execute();
}

StrategyOne 具体策略

public class StrategyOne implements IStrategy {

    @Override
    public void execute() {
        System.out.println("I am StrategyOne");
    }
}

StrategyTwo 具体策略

public class StrategyTwo implements IStrategy {

    @Override
    public void execute() {
        System.out.println("I am StrategyTwo");
    }
}

StrategyExecutor 策略执行器

public class StrategyExecutor {

    private IStrategy strategy;

    public IStrategy getStrategy() {
        return strategy;
    }

    public void setStrategy(IStrategy strategy) {
        this.strategy = strategy;
    }

    public void execute() {
        strategy.execute();
    }
}