May 2007
Beginner
720 pages
15h 46m
English
Content preview from Sams Teach Yourself Java™ 6 in 21 DaysBecome 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,
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Chapter 6. Packages, Interfaces, and Other Class Features
Classes, the templates used to create objects that can store data and accomplish tasks, turn up in everything you do with the Java language.
Today, you extend your knowledge of classes by learning more about how to create them, use them, organize them, and establish rules for how other classes can use them.
The following subjects are covered:
Controlling access to methods and variables from outside a class
Finalizing classes, methods, and variables so that their values or definitions cannot be subclasses or cannot be overridden
Creating abstract classes and methods for factoring common behavior into superclasses
Grouping classes into packages
Using interfaces to bridge gaps in a class hierarchy ...
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O’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.
I 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.
I’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.
I'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.