策略模式

策略模式【Strategy Pattern 】

interface Istragy{
    void operate();
}

class A implements Istragy{
    @Override
    public void operate() {
        System.out.println("A");
    }
}

class B implements Istragy{
    @Override
    public void operate() {
        System.out.println("B");
    }
}

class Constent{
    private Istragy is = null;

    public Constent(Istragy is) {
        this.is = is;
    }

    public void runOp(){
        this.is.operate();
    }
}

public class Do{
    public static void main(String[] args) {
        Constent constenta = new Constent(new A());
        constenta.runOp();
        Constent constentb = new Constent(new B());
        constentb.runOp();
    }
}

找机会实用吧，会写白搭。

 

转载于:https://www.cnblogs.com/mbky/p/6298177.html