Defining standards using interfaces

Source: Internet
Author: User

Example: Defining a USB Standard

Interface USB {// operating standard

public void Install ();

public void work ();

}

Example: Apply this interface on a PC

Class Computer {

public void plugin (USB usb) {

Usb.install ();

Usb.work ();

}

}

Example: Defining a USB device

class Phone implements USB {

public void Install () {

System.out.println ("Install the phone driver. ") ;

}

public void work () {

System.out.println (" mobile phones and computers are working. ") ;

}

}

Example: Defining a USB device

Class Print implements USB {

public void Install () {

System.out.println ("Install the printer driver. ") ;

}

public void work () {

System.out.println (" for file printing. ") ;

}

}

Example: Connection

Interface USB {// operating standard

public void Install ();

public void work ();

}

Class Computer {

public void plugin (USB usb) {

Usb.install ();

Usb.work ();

}

}

Class Phone implements USB {

public void Install () {

System.out.println ("Install the phone driver. ") ;

}

public void work () {

System.out.println (" mobile phones and computers are working. ") ;

}

}

Class Print implements USB {

public void Install () {

System.out.println ("Install the printer driver. ") ;

}

public void work () {

System.out.println (" for file printing. ") ;

}

}

public class Test {

public static void Main (String args[]) {

Computer C = new computer ();

C.plugin (New Phone ()); USB USB = new Phone ();

C.plugin (New Print ());

}

}


Defining standards using interfaces

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.