unable to set JAVA_HOME
 

hello people....
I was trying to install apache-tomcat on my debian system....
prior to it it asked me to install JDK...
i did tat successfully....
but at the i am unable to set JAVA_HOME variable...
that is even after editing /etc/profile
i added these two lines after export PATH in tat file

JAVA_HOME="/usr/lib/jdk"
export JAVA_HOME

to install tomcat this variable needs to be set...
so anybody with any idea please help.....
thank you...

assuming you are using bash try /etc/bash.bashrc
this somewhat confusing behaviour of bash is described in the INVOCATION section of the bash manpage

Note that only new shells pick up the changes.

export $JAVA_HOME