Java

Java is a powerful framework from Sun microsystems which builds upon a unique philosophy of code once, configure once, install everywhere. Ubiquitous cross-platform software is their bucket. It is required if you need to install the apache tomcat server.

Install

1. Download the JDK from Sun, to start go here: http://java.sun.com/javase/downloads/index.jsp
2. Download this .bin file and save it to your Linux machine.
3. Execute './filename', where filename is the name of the file that you downloaded. The filename might be very similar to jdk-6-linux-i586-rpm.bin depending on what the latest version is. You may have to make the file executable by executing the 'chmod +x filename.bin' command.
4. Install the rpm files by executing 'rpm -i filename.rpm', where filename is the name of your .rpm file. (Such as jdk-6-linux-i586.rpm).
5. Now, if you want to be able to execute this version of Java interpretor or compiler from any directory on your Linux system you will have to create a few symbolic links:
6. ln -s /usr/java/jdk1.6.0/bin/java /usr/bin/java
7. ln -s /usr/java/jdk1.6.0/bin/javac /usr/bin/javac
8. You are done!

External references

• Java download page
• Java in Linux how-to