Test JVM version and parameters

I am a novice Java programmer. Is there a resource you can direct me to that will guide me to coding the following? I need to have this on a Web page.
--I need to test and display the JVM version
--I need to check the value of the Jave Runtime Parameters field (on a PC: Start > Control Panel > Java Plug-in: Advanced Tab)
Thank you in advance for any help.
b.

System.getProperty("java.vm.version");See
http://java.sun.com/j2se/1.5.0/docs/api/java/lang/System.html#getProperties()
for a list of mandatory properties.

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