Java debug mode

JVM options

Add something like

-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=5006
    

To the jvm options. This means you can connect to the jvm on port 5006

In intellij, you can set this up as a remote configuration. I kept the default values:

Transport: socket

Debugger mode: attach

After the jvm is started, the maching hosting the jvm will be listening on TCP port 5006.