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How to monitor Java memory usage of heap/permanent generation and gc activities

Solution Verified - Updated 2018-08-28T14:48:51+00:00 -

Issue

Is there some way to monitor JBoss perm gen memory. Is there a way to output the information to a log file?
How to monitor Java heap and perm memory usage by using command line tool?
How to configure JBoss to send an alert when the PS-OLD-Gen memory space reaches a certain amount?
We need to monitor the java heap while the app is running. what is the best way to do this?

Environment

Red Hat JBoss Enterprise Application Platform (EAP)
- All Versions
Java
- OpenJDK
- Sun/Oracle JDK

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