Copy paste dari sini ~> http://wiki.apache.org/tomcat/FAQ/Developing
The short answer is to add the following options when the JVM is started:
There are a number of ways you can do this depending on how you normally start Tomcat:
- If you are using shell scripts to start Tomcat, start it with the following command:
catalina jpda start
It will start Tomcat so that a remote debugger can be connected to port 8000.
The above mentioned options can be provided by setting certain environment variables. See the comments at the top of catalina.sh or .bat file for details.
For example, the port number and JPDA transport implementation can be set with JPDA_ADDRESS=8000 and JPDA_TRANSPORT=dt_socket.
- If you run Tomcat using service wrapper, add the above JVM options before any other JVM options. Check the documentation for the service wrapper to determine how to set JVM options.
- If you start Tomcat from within an IDE, check the documentation for the IDE to determine how to set the required JVM options.
The port does not need to be set to 8000, it may be any value appropriate for your system.
Whilst this is very useful in development it should not be used in production because of both security and performance implications.