October 2014
Beginner to intermediate
285 pages
6h 24m
English
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Java Language
This is not a complete list of every Java feature—it’s just the important bits you might need, shown as examples in most cases.
Literal Data Types
- Whole numbers
-
int i = 7; i = -5;
- Numbers with fractional parts
-
double num = 3.14; num = 0.01; num = -3e15 (means -3 times 10 to the 15th power)
- True or false
-
boolean shouldGetUp=true; shouldGetUp=false (or any Boolean expression that resolves to true or false)
- String of text characters
-
String s="Hello";
- Array
-
String[] grades = {"A", "B", "C", "D", "F", "Inc"};
Math Operators
- Add
-
a + b
- Subtract
-
a - b
- Multiply
-
a * b
- Divide
-
a / b
- Remainder
-
a % b (for whole numbers—integers—only)
- Specify order of terms
-
((a + b) * z) (a + b will be added first, then multiplied by z)
True-or-False ...
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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.