Java Installation Problem in CentOs Which JAVA

[RAISINGSUN]

I am using CentOS flavor

well by using "yum list installed" command
java open jdk 1.6 is installed...

when i type ...java command
it shows some output related to java command
it means that java is installed

I downloaded java 1.7 version package(.tar.gz)
and
installed in /usr/bin/java/jdk1.7.0.
and
set the classpath and path files java_home in bashprofile and bashrc

when i run java command i shows the output it simply means java is installed and javac also worked

I succesfully installed the java 1.7 overriding the openjdk1.6
verified by java -version command...


But

when I type comand "which java" command it show the output as /usr/lib/java where the java openjdk 1.6 is installed primiraliy comes with the os

if the older version is overridden the
it should show the output as /usr/bin/java/jdk1.7.10

it means that java 1.6 is not overridden ???
???
??

[Roxoff]

It can get really messy. Use the 'alternatives' tool to straighten out the Java system, you need to run this from the command line. Check out its man page.

[atreyu]

Roxoff is right. I've done this so many times I wrote it down. I do something like this:

# back up the original java
[ -f /usr/bin/java ] && mv /usr/bin/java /usr/bin/java160

# use alternatives command to install links and stuff
update-alternatives --install "/usr/bin/java" "java" "/usr/bin/java/jdk1.7.0/bin/java" 1

In the second command, replace with "/usr/bin/java/jdk1.7.0/bin/java" with whatever is the proper path to the java binary.