June 2004
Intermediate to advanced
848 pages
21h 28m
English
Content preview from Just Java™ 2
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Access Modifiers
It's important to know the information in this section, but you can skim through it on the first reading. It explains how we can use keywords to make things more widely or narrowly visible.
There are three or four keywords that are applied to class members. These keywords are collectively called the access modifiers. By default, a member is only visible to classes in its own package. Certain keywords make them visible inside the class (only), or inside the inheritance hierarchy, or to classes in other packages.
Access modifiers for a class
Class declarations can be nested inside other classes. It's a design choice you'd make when the nested class is a helper or utility for the top level class. E.g. the top level class ...
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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.