August 2003
Intermediate to advanced
672 pages
16h 23m
English
book
Programmer's Guide to Java™ Certification, A: A Comprehensive Primer, Second Edition
by Khalid A. Mughal, Rolf W. Rasmussen
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3.22. final Parameters
A formal parameter can be declared with the keyword final preceding the parameter declaration in the method definition. A final parameter is also known as a blank final variable; that is, it is blank (uninitialized) until a value is assigned to it, (for example, at method invocation) and then the value in the variable cannot be changed during the lifetime of the variable (see also the discussion in Section 4.10, p. 146). The compiler can treat such blank final variables as constants for code optimization purposes. Whether a formal parameter is declared as final, does not affect the caller's code.
The definition of method calcPrice() from Example 3.3 is shown below, with the formal parameter pizzaPrice declared as final ...
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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.