package com.leo.interface_;

public interface UsbInterface {

    public void start();
    public void stop();
}

package com.leo.interface_;

public class Camera implements UsbInterface{
    @Override
    public void start() {
        System.out.println("相机开始工作");
    }

    @Override
    public void stop() {
        System.out.println("相机停止工作");
    }
}

package com.leo.interface_;

public class Phone implements UsbInterface{
    @Override
    public void start() {
        System.out.println("手机开始工作");
    }

    @Override
    public void stop() {
        System.out.println("手机停止工作");
    }
}

package com.leo.interface_;

public class Computer{
    public void work(UsbInterface usbInterface) {
        usbInterface.start();
        usbInterface.stop();
    }
}

 

package com.leo.interface_;

public interface Interface01 {
    public static void main(String[] args) {
        Camera camera = new Camera();
        Phone phone = new Phone();
        Computer computer = new Computer();
        computer.work(phone);
        computer.work(camera);
    }
}