- Download jdk(jdk-6u33-linux-i586-rpm.bin) from Java Sun
 - cd /root
 - cp jdk-6u33-linux-i586-rpm.bin /usr/local
 - cd /usr/local
 - chmod +x jdk-6u33-linux-i586-rpm.bin
 - ./ jdk-6u33-linux-i586-rpm.bin
 - Test JDK
 - By default Java will be installed to /usr/java/jdk1.6.0_33/
 - /usr/java/jdk1.6.0_33/bin/java -version
 - Choosing JDK
 - alternatives --install /usr/bin/java java /usr/java/jdk1.6.0_33/bin/java 2
 - alternatives --config java
 
There are 3 programs which provide 'java'.
Selection Command
-----------------------------------------------
*+ 1 /usr/lib/jvm/jre-1.6.0-openjdk/bin/java
2 /usr/lib/jvm/jre-1.4.2-gcj/bin/java
3 /usr/java/jdk1.6.0_33/bin/java
Enter to keep the current selection[+], or type selection number: 3
Done!