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upgrade java version

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iinfi

mekalodu
when i installed Cent OS on my machine jre-1.4.2 was automatically installed.
java -version command gives the output.
java version 1.4.2

now i have installed jdk-1.6_11 or jre 1.6 on the machine. now my java -version command still shows 1.4.2

i changed the path variable in /root/.bash_profile
Code:
# .bash_profile

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
	. ~/.bashrc
fi

# User specific environment and startup programs

PATH=$PATH:$HOME/bin:/usr/java/jdk1.6.0_11/bin
JAVA_HOME=/usr/java/jdk1.6.0_11
## JAVA=/usr/java/jdk1.6.0_11/bin
export PATH
export JAVA_HOME

unset USERNAME
plz let me know where i m going wrong.

thanks
 
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