Which jdk?

hi , I am new to this area.
My Linux server is Enterprise Linux Enterprise Linux Server release 5.5 based on X86_64 server, and I have created a user 'weblogic' and under his name I have installed Jrockit "jrockit-jdk1.6.0_26-R28.1.4-4.0.1-linux-x64.bin" in /home/weblogic/
I also changed the weblogic user's .bash_profile like this :
# .bash_profile
# Get the aliases and functions
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi
# User specific environment and startup programs
PATH=$PATH:$HOME/bin
JAVA_HOME=/home/weblogic/jrockit-jdk1.6.0_26-R28.1.4-4.0.1
PATH=$PATH:/$JAVA_HOME/bin/
export PATH
after changing, run the " source .bash_profile" and
I checked the java version using " java -version" but the display is :
java version "1.4.2"
gij (GNU libgcj) version 4.1.2 20080704 (Red Hat 4.1.2-48)
Copyright (C) 2006 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
instead I want this :
java version "1.6.0_26"
Java(TM) SE Runtime Environment (build 1.6.0_26-b03)
Oracle JRockit(R) (build R28.1.4-7-144370-1.6.0_26-20110617-2130-linux-x86_64, compiled mode)
which step i am wrong? Thanks for your guide!!!

Please see an older thread about "alternatives --config java" to switch the current default version of your java.
how can i remove jdk1.4 install in oracle unbreakable linux.
Btw, Oracle products usually ship with their own version of java do not rely on your installed version of java.

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