When the appclient script executes the java command to run the Application Client Container (ACC), which in turn runs the client, it includes on the command line the value of the VMARGS environment variable. You can set this variable to any suitable value. The following example debugging setup is for Windows systems:
The following example debugging setup is for UNIX-based systems:
set VMARGS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8118
For debugging an application client, you should set suspend to y so you can connect the debugger to the client before any code has actually executed. Otherwise, the client may start running and execute past the point you want to examine.
You should use different ports for the server and client if you are debugging both concurrently. For details about setting the port, see JPDA Options.
For information about the appclient script, see Sun GlassFish Enterprise Server 2.1 Reference Manual.