Java設計模式（適配器模式）

1、需要2個接口

1）TypeC.java

package com.company.adapter;

public interface TypeC {
    String getInfo();
}

2）USB.java

package com.company.adapter;

public interface USB {
    String getInfo();
}

2、

1）TypeC的實現類Phone

package com.company.adapter;

public class Phone implements TypeC {

    @Override
    public String getInfo() {
        return "這是一個手機";
    }
}

2）Computer含有USB的引用

package com.company.adapter;

public class Computer {
    private USB usb1;

    public void connect(USB usbDevice) {
        this.usb1 = usbDevice;
    }

    public void showInfo() {
        System.out.println(this.usb1.getInfo());
    }
}

3、最重要的類Adapter，連接USB和TypeC，實現USB接口並含有TypeC的引用

package com.company.adapter;

public class Adapter implements USB {

    private TypeC device;

    public Adapter(TypeC device) {
        this.device = device;
    }

    @Override
    public String getInfo() {
        return this.device.getInfo();
    }

}

4、主程序Progress.java

 

package com.company.adapter;

public class Progress {
    public static void main(String[] args) {
        Computer computer = new Computer();
        Phone phone = new Phone();

        //電腦通過適配器連接到TypeC手機
        computer.connect(new Adapter(phone));
        computer.showInfo();
    }
}