In the Solaris Express 8/04 release, the Java Virtual Machine (JVM) internals can now be monitored by industry-standard consoles that use JMX or SNMP protocols. Both mechanisms are disabled by default and are preconfigured to provide low memory notifications. The JMX mechanism also allows properties such as the logging level to be dynamically configured at runtime.
For further information, see http://java.sun.com/j2se/1.5.0/docs/guide/management/index.html.