Book Image

Java Programming for Beginners

By : Mark Lassoff
Book Image

Java Programming for Beginners

By: Mark Lassoff

Overview of this book

Java is an object-oriented programming language, and is one of the most widely accepted languages because of its design and programming features, particularly in its promise that you can write a program once and run it anywhere. Java Programming for Beginners is an excellent introduction to the world of Java programming, taking you through the basics of Java syntax and the complexities of object-oriented programming. You'll gain a full understanding of Java SE programming and will be able to write Java programs with graphical user interfaces that run on PC, Mac, or Linux machines. This book is full of informative and entertaining content, challenging exercises, and dozens of code examples you can run and learn from. By reading this book, you’ll move from understanding the data types in Java, through loops and conditionals, and on to functions, classes, and file handling. The book finishes with a look at GUI development and training on how to work with XML. The book takes an efficient route through the Java landscape, covering all of the core topics that a Java developer needs. Whether you’re an absolute beginner to programming, or a seasoned programmer approaching an object-oriented language for the first time, Java Programming for Beginners delivers the focused training you need to become a Java developer.
Table of Contents (12 chapters)

Multidimensional arrays

In Java, our most basic data structure is the array, which allows us to store sequences of light-typed information and access this through a single location in memory. Sometimes, however, arrays are unwieldy, and we want to use more strongly organized data structures so that they can be easier for humans to understand and write programs around. Oftentimes, what's appropriate here is a multi-dimensional array.

"Multidimensional array" is a pretty scary-sounding name, but in fact the concept behind it is very basic. The question is what happens if we create an array of arrays? The following line of code shows the syntax to do just that:

char[][] twoDimArr = new char[3][7];

This line of code will create a two-dimensional multidimensional array. You'll see it's very much like the syntax for simply creating an array of characters under...