How to upgrade to java 1.6 from java 1.5 on CentOS

How to upgrade to java 1.6 from java 1.5 on CentOS

Interested in upgrading JAVA VERSION from JAVA 1.5 to JAVA 1.6 on CentOS / Linux.
there are following step to upgrade java 1.6 from java 1.5 on linux / CentOS :-

1. Check Current Java version :-
[oracle@server301 /]$ java -version
java version "1.5.0_12"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_12-b04)
Java HotSpot(TM) Server VM (build 1.5.0_12-b04, mixed mode)

2. check which java :-
   [oracle@server301 /]# which java
   /usr/java/jdk1.5.0_12/bin/java

3. Download Jdk rpm jdk-6u25-linux-amd64.rpm :-
    [oracle@server301 /]# cd /tmp
     [oracle@server301 /tmp/]#  wget http://www.java.net/download/jdk6/6u25/promoted/b01/binaries/jdk-6u25-ea-bin-b01-linux-amd64-27_jan_2011-rpm.bin

 4. Run RPM using below command :-
     [oracle@server301 /tmp/]# rpm -Uch jdk-6u25-linux-amd64.rpm

5. Remove jdk1.5 using update-alternatives :- 
     [oracle@server301 /tmp/]#  /usr/sbin/update-alternatives --remove java /usr/java/jdk1.5.0_12/jre/bin/java

6. Install jdk 1.6 using update-alternatives :- 
     [oracle@server301 /tmp/]#  /usr/sbin/update-alternatives --install /usr/bin/java java /usr/java/jdk1.6.0_25/bin/java 1

7. Config Java (jdk1.6) :-
  ls -l /usr/java/jdk1.6.0_25/bin/java -v
  [oracle@server301 /tmp/]#  /usr/sbin/update-alternatives --config java

8. Check New Java Version :-
     ls -l /usr/java/jdk1.6.0_25/bin/java -v
     [oracle@server301 /tmp/]# java -version
     java version "1.6.0_25"
     Java(TM) SE Runtime Environment (build 1.6.0_25-b06)
     Java HotSpot(TM) 64-Bit Server VM (build 20.0-b11, mixed mode)

9. Update Java path :-
    [oracle@server301 /tmp/]# vi /etc/profile
    [oracle@server301 /tmp/]# vi /root/.bashrc
    [oracle@server301 /tmp/]# vi /home/oracle/.bashrc

   add below line in above file for java path and classpath.

    JAVA_HOME=/usr/java/jdk1.6.0_25
   PATH=$JAVA_HOME/bin:$PATH
   CLASSPATH=. : $JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar
   export PATH CLASSPATH JAVA_HOME