Tomcat 4 and Tomcat 5 on same machine?

[Rhino]

Can anyone tell me: If it is possible to have an instance of Tomcat 4.1.x on the same Linux Mandrake server as an instance of Tomcat 5.x? How to set things up so that both instances run as services but are independent from one another, i.e. each can be started/stopped separately from the other and potentially use a different Java JDK. A pointer to any documentation on this subject or to something in the mailing list archive would be very useful if you could provide that.   I was going to try to search for this in the archive but couldn't think of a common term that would appear in all such posts.   We want the Tomcat 5 instance to be our test environment. We will put our Tomcat 4 servlets in Tomcat 5 and verify that they all still work; then we'll probably drop the Tomcat 4 instance, unless we can think of a good reason to keep it around.   Rhino --- rhino1 AT sympatico DOT ca "There are two ways of constructing a software design. One way is to make it so simple that there are obviously no deficiencies. And the other way is to make it so complicated that there are no obvious deficiencies." - C.A.R. Hoare