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From "isaco" <>
Subject RE: JRE or JDK
Date Tue, 05 Feb 2002 06:07:23 GMT
to add a little to Paul's correct explanation, it is required to place
the java_home\jre\lib\rt.jar in your classpath variable for compiling
JSPs and regular Java applications, such as beans and utility files
etc. in your path variable, you would add the java_home\bin reference.
also, with NT installs of tomcat, i have found an anomaly whereby it
is imperative to add the java_home\...\rt.jar reference as the last in
the list of Classpath variable paths... odd but true.
I just completed a total of about 18 installs of tomcat 4.0 on win2k
and nt machines and the differences we found between them left me
breathless with frustration at various moments.
Anyway, I hope this addendum helps.

-----Original Message-----
From: Pavel Brun []
Sent: Monday, February 04, 2002 7:14 PM
To: Tomcat Users List
Subject: RE: JRE or JDK

you need the JDK for JSP page compilation. JRE (Java Runtime) is only
running Java Applications. The JDK is used to compile the JSP pages


-----Original Message-----
From: Ken Sanderson []
Sent: Monday, February 04, 2002 6:45 PM
Subject: JRE or JDK

Hello all. I have installed tomcat on my NT machine, in order to run a
software application that requires it. In the install instructions it
about setting the JAVA_HOME variable to the JDK bin folder. However,
cannot find the necessary files it needs in that location. Instead if
I set
the JAVA_HOME variable to my JRE bin folder, it works fine. Is JDK
to be JRE?

Everything is working great with the JRE setup, however I noticed that
I go to the log on window, tomcat is shut down. After some research I
that the problem is my JDK, and I need to upgrade it to 1.3.1, which I
Now the question is, since my JAVA_HOME is pointing to the JRE, is it
1.3.1 of JRE I need, not the JDK?

Sorry thats probably confusing, thoughts appreciated.

Ken Sanderson

Miistakis Institute for the Rockies
c/o Faculty of Environmental Design
2500 University Drive NW
Calgary, Alberta
T2N 1N4

t 1 (403) 220-8968
  1 (403) 220-2573

"facilitating ecosystem research & management in the Rocky Mountains"

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