how to tell jvm in debug mode?

[Matt]

If we want to debug application servers, people told me to tell
the JVM in debug mode. something like: -XDebug

Please advise. thanks!!

 

[Tor Iver Wilhelmsen]

If we want to debug application servers, people told me to tell
the JVM in debug mode. something like: -XDebug

Please advise. thanks!!

Read the "tooldocs" for tha java command, it tells you which
parameters to set.