June 2004
Intermediate to advanced
848 pages
21h 28m
English
Content preview from Just Java™ 2
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Summary
You have now covered two of the four cornerstones of object-oriented programming: abstraction and encapsulation. This section summarizes what we've seen.
OOP is all about special support for class types and the operations on them. Objects are variables whose type is a class. Classes, objects, and methods belong together in a unbreakable way. The methods in a class can only be invoked on objects that belong to that class. If you don't have an object, you cannot invoke one of the object methods. You cannot write a method in class A that is invoked on an object of some unrelated class B. There is no way to get that past the compiler in Java.
There are no structures or records in Java. The most important way to group related things is ...
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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.