Java Integrated Development Environments

To simplify Java software development, many programmers use an Integrated Development Environment (IDE). There are several good, free Java IDEs available for download. Among them are:

These are quite similar in how they work, so once you have used one, it's easy to switch to another.

Although all the Java examples in this book can be run at the command line, we will instead show them running on NetBeans. This has several advantages, including:

Here is the standard Hello World program in NetBeans:

When you run this program in NetBeans, you will see some of its syntax coloring: gray for comments, blue for reserved words, green for objects, and orange for strings.

In most cases, to save space, we will omit the header comments and the package designation from the listing displays, showing only the program, like this:

Or, sometimes just we'll show the main() method, like this:

Nevertheless, all the complete source code files are available for download at the Packt Publishing website.

Here is the output from the Hello World program: