December 2024
Beginner
208 pages
3h 46m
English
Content preview from Java Essentials For Dummies
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Chapter 12
Using Arrays
IN THIS CHAPTER
Working with basic one-dimensional arrays
Using array initializers to set the initial values of an array
Using for loops with arrays
Working with two-dimensional arrays
We could use a raise… .
Oh, arrays. Sorry.
Arrays are an important aspect of any programming language, and Java is no exception. In this chapter, you discover just about everything you need to know about using arrays. We cover run-of-the-mill one-dimensional arrays; multidimensional arrays; and two classes that are used to work with arrays, named Array and Arrays.
Understanding Arrays
An array is a set of variables that is referenced by using a single variable name combined with an index number. Each item of an array is called an element. All the elements in an array must be of the same type. Thus the array itself has a type that specifies what kind of elements it can contain. An int array can contain int values, for example, and a String array can contain strings.
The index number is written after the variable name and enclosed in brackets. So if the variable name is x
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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.