Jconsole

Jconsole is a JMX complaint Graphical User Interface(GUI) tool for monitoring Java Virtual Machine (JVM). This tool is bundled with JDK starting from JavaSE5(TIGER).

How to start JConsole
The jconsole executable can be found in JDK_HOME/bin.Just double click it. or you can start from console.
Note : JDK_HOME - is the directory where you installed JDK.
You can monitor JVM which is running locally or remotely.

This fig shows 3 tabs.

Advanced Tab enables you to connect to other JMX agents by specifying their JMX URL
Remote tab enables you to monitor remote JVM by specifying Host name, Port Number,UserName and password
Local tab enable you to monitor local JVM