January 2020
Beginner
672 pages
18h 17m
English
Content preview from Sams Teach Yourself Java in 21 Days (Covers Java 11/12), 8th Edition
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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.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.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.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.
Lesson 2. The ABCs of Programming
A Java program is made up of classes and objects, which are made up of methods and variables. Methods are made up of statements and expressions, which are made up of operators.
At this point, you might be worried that Java is like a set of Russian nesting matryoshka dolls. Each doll has a smaller doll inside it, as intricate and detailed as its larger companion, until you reach the smallest one.
This lesson clears away the big dolls to reveal the smallest elements of Java programming. It sets aside classes, objects, and methods and examines the basic things you can do in a single line of Java code. The following subjects are covered:
Statements and expressions
Variables and primitive data types
Constants
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