Apache Commons IO - Environment Setup

In this chapter, we will learn about the local environment setup of Apache Commons IO and how to set up the path of Commons IO for Windows 2000/XP, Windows 95/98/ME etc. We will also understand about some popular java editors and how to download Commons IO archive.

Local Environment Setup

System Requirements

Verify your Java Installation

First of all, you need to have Java Software Development Kit (SDK) installed on your system. To verify this, execute any of the two commands depending on the platform you are working on.

If the Java installation has been done properly, then it will display the current version and specification of your Java installation. A sample output is given in the following table.

We assume the readers of this tutorial have Java SDK version 11.0.11 installed on their system.

In case you do not have Java SDK, download its current version from www.oracle.com/technetwork/java/javase/downloads/index.html and have it installed.

Set your Java Environment

Set the environment variable JAVA_HOME to point to the base directory location where Java is installed on your machine. For example,

Append the full path of Java compiler location to the System Path.

Execute the command java -version from the command prompt as explained above.

Popular Java Editors

To write your Java programs, you need a text editor. There are many sophisticated integrated development environment (IDEs) available in the market. But for now, you can consider one of the following −

Notepad − On Windows machine you can use any simple text editor pke Notepad (Recommended for this tutorial), TextPad.

Netbeans − It is a Java IDE that is open-source and free which can be downloaded from www.netbeans.org/index.html.

Ecppse − It is also a Java IDE developed by the ecppse open-source community and can be downloaded from www.ecppse.org.

Download Common IO Archive

Download the latest version of Apache Common IO jar file from commons-io-2.11.0-bin.zip. At the time of writing this tutorial, we have downloaded commons-io-2.11.0-bin.zip and copied it into C:>Apache folder.

Set Apache Common IO Environment

Set the APACHE_HOME environment variable to point to the base directory location where Apache jar is stored on your machine. Assuming, we ve extracted commons-io-2.11.0-bin.zip in Apache folder on various Operating Systems as follows.

Set CLASSPATH Variable

Set the CLASSPATH environment variable to point to the Common IO jar location. Assuming, you have stored commons-io-2.11.0-bin.zip in Apache folder on various Operating Systems as follows.