工厂模式之适配器模式

1.概念

1.适配器模式是将一个类的接口转换成客户期望的另外一个接口,使原本的接口不兼容的类可以一起工作;
2.属于结构型设计模式;

2.生活化场景

2.1.电脑转接口

2.2.手机转接头

3.案例

3.1.交流电220v转换[转成交流电5v]

3.1.1.电220V

package com.gaoxinfu.demo.poweradapter;


public class AC220 {

    public int outputAC220V(){
        int output = 220;
        System.out.println("输出电流" + output + "V");
        return output;
    }
}

3.1.2.电5V [通过定义5V的接口]

package com.gaoxinfu.demo.poweradapter;

public interface DC5 {
    int outoupDC5V();
}

3.1.3.定义一个适配器PowerAdapter,实现DC5接口

通过实现DC5的接口,实现DC5的功能

package com.gaoxinfu.demo.poweradapter;


public class PowerAdapter implements DC5 {

    private AC220 ac220;

    public PowerAdapter(AC220 ac220) {
        this.ac220 = ac220;
    }

    public int outoupDC5V() {
        int adapterInput = ac220.outputAC220V();
        int adapterOutput = adapterInput / 44;
        System.out.println("使用PowerAdapter输入AC:" + adapterInput + "V,输出DC：" + adapterOutput + "V");
        return adapterOutput;
    }
}

3.1.4.测试

package com.gaoxinfu.demo.poweradapter;


public class PowerAdapterTest {
    public static void main(String[] args) {
        DC5 dc5 = new PowerAdapter(new AC220());
        dc5.outoupDC5V();
    }
}