Skip to Content
PURE Java™ 2
book

PURE Java™ 2

by Kenneth Litwak
December 1999
Intermediate to advanced
816 pages
20h 27m
English
Sams
Content preview from PURE Java™ 2

Interface Contents

Here again are the elements that can go into an interface:

  • public, static, final data members. This is about the closest you get in Java to a global constant. By default, even if you don't declare them as such, all the data members of an interface are public, static, and final. So you could code

       int MAIN_BRANCH_NUMBER = 01;
    

    or you could code

       public static final int MAIN_BRANCH_NUMBER = 01;
    

    The Java Language Specification says that it is strongly discouraged to redundantly specify these keywords. I happen to disagree and feel strongly that, for the sake of those who don't know the rules, you should specify the keywords. Doing so is useful for documentation purposes and certainly doesn't hurt anything. What's more, the keywords ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.

Read now

Unlock full access

More than 5,000 organizations count on O’Reilly

AirBnbBlueOriginElectronic ArtsHomeDepotNasdaqRakutenTata Consultancy Services

QuotationMarkO’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.
Julian F.
Head of Cybersecurity
QuotationMarkI wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.
Addison B.
Field Engineer
QuotationMarkI’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.
Amir M.
Data Platform Tech Lead
QuotationMarkI'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Mark W.
Embedded Software Engineer

You might also like

Java™ Phrasebook

Java™ Phrasebook

Timothy Fisher
Special Edition Using Java 2 Standard Edition

Special Edition Using Java 2 Standard Edition

Brian Keeton, Chuck Cavaness, Geoff Friesen

Publisher Resources

ISBN: 0672316544Purchase book