Sun Java System Web Server 6.1 SP7 Programmer's Guide to Web Applications

JPDA Options

The default JPDA options are as follows:

-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n

If you substitute suspend=y, the JVM starts in suspended mode and stays suspended until a debugger attaches to it. This is helpful if you want to start debugging as soon as the JVM starts.

To specify the port to use when attaching the JVM to a debugger, specify address=port_number.

You can include additional options. A list of JPDA debugging options is available here: