August 2018
Intermediate to advanced
524 pages
14h 45m
English
Content preview from Java Projects - Second Edition
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Fields
Fields are variables on the class level. They represent the state of an object. They are variables with defined a type and a possible initial value. Fields can be static, final, transient, and volatile, and the access may be modified with the public, protected, and private keywords.
Static fields belong to the class. It means that there is one of them shared by all the instances of the class. Normal, nonstatic fields belong to the objects. If you have a field named f, then each instance of the class has its own f. If f is declared static, then the instances will share the very same f field.
The final fields cannot be modified after they are initialized. Initialization can be done on the line where they are declared, in an initializer ...
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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.