How to set JAVA_HOME for multiple Tomcat instances?

Question

I have 2 Java Web Projects. One runs on JDK 1.5 and the other runs on JDK 1.6. I want to run both of them on the same computer, but the JAVA_HOME environment variable can on

Answer 1

I think this is a best practice (You may be have many Tomcat instance in same computer, you want per Tomcat instance use other Java Runtime Environment):

This is manual inside file: catalina.sh

#   JRE_HOME        Must point at your Java Runtime installation.
#                   Defaults to JAVA_HOME if empty. If JRE_HOME and JAVA_HOME
#                   are both set, JRE_HOME is used.