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The following components are required:

Java SDK (or runtime only) needs to be installed. Version 1.2 or later.

Jakarta Tomcat package must be installed and configured. This can be obtained from the Jakarta project site (http://jakarta.apache.org/tomcat/)

The virtuoso.ini file must edited to including the following settings in the [Parameters] section:

.....
JavaClasspath = <jdk install dir>/lib/tools.jar:<tomcat install dir>/bin/bootstrap.jar
JavaVMOption1 = -Djava.endorsed.dirs=<tomcat install dir>/bin:<tomcat install dir>/common/endorsed
JavaVMOption2 = -Dcatalina.base=<tomcat install dir>
JavaVMOption3 = -Dcatalina.home=<tomcat install dir>
JavaVMOption4 = -Djava.io.tmpdir=<tomcat install dir>/temp
.....

Run the virtuoso-*-javavm*-t binary, The Virtuoso server that includes Java hosting.

Start the Jakarta Tomcat server inside virtuoso server process using the following command from ISQL:

SQL> java_call_method ('org.apache.catalina.startup.BootstrapService', null, 'main', 'V',
     vector ('[Ljava/lang/String;', vector ('start')));

In order to invoke the above command automatically at server startup you might put it in the autoexec.isql init script.

Make a virtual directory for accessing JSP server, here is an example:

vhost_define (lpath=>'/tomcat',ppath=>'http://example.com:8080/');

Verify that your installations are correct by pointing your web browser of choice to http://example.com:8890/tomcat/ (assuming you are working on your local machine). Run some of JSP examples provided with Tomcat distribution to verify that they are executed without errors.