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)

Integer variables

To begin, let's create a new project in NetBeans. I'm going to call mine Variables, and this time we'll allow NetBeans to create the main class for us so that we can get to coding as quickly as possible. We need to delete all the comments that are created automatically by NetBeans when we create our new project, just to keep everything as readable as possible, then we'll be good to go:

The first computers were little more than calculators, and Java, of course, retains this functionality. For example, Java can evaluate 1+1, which will evaluate to 2, of course. However, Java is pretty complicated and designed to do a lot of different things, so we need to provide context to our commands. Here, we tell Java that we'd like it to print the result of 1+1:

package variables; 
public class Variables { 
    public static void main(String...