Let's get started with Java programming. First, you will need to download the latest Java software from the Oracle web site, as shown in Figure 2.1 (www.oracle.com/technetwork/java/javase/downloads/index.html). There are three download choices: JDK, Server JRE, and JRE. The server JRE and JRE are for running the Java programs only; since you will need to compile Java programs in this book, you need to download the JDK software package. Just follow the instructions on the web site to download and install the Java SE JDK on your computer.
After installation, you will need to set up a few environmental variables, such as PATH and JAVA_HOME. Environment variables help programs know which folder to install files in, where to store temporary files, where to find user profile settings, and so on. To set up the environmental variables in Windows, go to Control Panel ➪ Advanced System Settings ➪ Environment Variables. ...
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