This JavaOne I'll be speaking with Tomas Hurka, the VisualVM author on Wednesday June 03 at 6:45 p.m.:
We will show the monitoring and troubleshooting capabilities from the JDK out-of-the-box.
We continue to enhance the monitoring and management capability of the JDK. Alan Bateman has added the new direct buffer monitoring feature in JDK 7. Check it out!