Set java version to two different Tomcat instances

Question

I've two Tomcat instances A and B on my working machine and I need to set two different java versions for each instance; on A java 1.6 and on B java 1.7, how can I make it?

Answer 1

change JAVA_HOME to the explicit path of your java installation in tomcat\bin\catalina.bat for windows or tomcat\bin\catalina.sh for linux

for java7 the path could be C:\Program Files\Java\jre7

Answer 2

In catalina.bat file, set JAVA_HOME for both instances of tomcat. say for instance A, set it to path of java 1.6 and for instance B , set it as java 1.7.

set JAVA_HOME=C:\Program Files\Java\jdk1.6.0_07

add this line in the bat file, change path accordingly.