How to install JDK on Linux (RHEL5.*)

1. Download jdk installation file from http://www.oracle.com/technetwork/java/javase/downloads/index.html.

　　a) If the file you download is rpm file, you can use command [rpm -i *.rpm] to start installing it.

　　b) If it's bin file, you can use command [./*.bin] to start installing it.

　　 Then you can finish the installation following the wizard with the default option.

2. Set environment.

　　Add the following code to the end of a certain configuration file.

　　#set java environment

　　JAVA_HOME=/usr/java/jdk1.6.0_29

　　CLASSPATH=.:$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar

　　PATH=$JAVA_HOME/bin:$PATH

　　export JAVA_HOME CLASSPATH PATH

　　a) Add it to file /etc/profile if you want everyone has this java environment.

　　b) Add it to file ~/.profile if you just want that current user has this java environment.