February 2017
Beginner
1056 pages
28h 57m
English
Content preview from Java: An Introduction to Problem Solving and Programming, 8th EditionBecome 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 Summary
A variable can hold values, such as numbers. The type of the variable must match the type of the value stored in the variable.
Variables and all other items in a program should be given names that indicate how they are used. These names are called identifiers in Java.
All variables should be given an initial value before you use them in the program. You can do this using an assignment statement, optionally combined with the variable declaration.
Parentheses in arithmetic expressions indicate the order in which the operations are performed.
When you give a value to a variable by using an assignment statement, the data type of the variable must be compatible with the type of the value. Otherwise, a type cast is necessary.
The methods ...
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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.