定义一接口接口名叫Usb,该接口声明了两个方法分别为start()和stop()方法
接口Usb
public interface Usb {
void start();
void stop();
}
类UsbDiskWriter
public class UsbDiskWriter implements Usb{
public void start() {
System.out.println("UsbDiskWriter开始");
}
public void stop() {
System.out.println("UsbDiskWriter终止");
}
}
类Camera
public class Camera implements Usb{
public void start() {
System.out.println("Camera开始");
}
public void stop() {
System.out.println("Camera终止");
}
}
类Mobile
public class Mobile implements Usb{
public void start() {
System.out.println("Mobile开始");
}
public void stop() {
System.out.println("Mobile终止");
}
}
测试类Test
public class Test {
public static void main(String[] args) {
UsbDiskWriter usbDiskWriter = new UsbDiskWriter();
usbDiskWriter.start();
usbDiskWriter.stop();
Camera camera = new Camera();
camera.start();
camera.stop();
Mobile mobile = new Mobile();
mobile.start();
mobile.stop();
}
}
结果：
UsbDiskWriter开始
UsbDiskWriter终止
Camera开始
Camera终止
Mobile开始
Mobile终止
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