>>>>>ShortDescription
The jmx ObjectName.checkComponents fails off the standard sun reference implementation (jmxri).  I'm not sure which of the validation checks is causing the failure.  Have been using the jmxri for several years in a variety of projects with no problems with it.

>>>HowToReproduce
The following lines are enough to produce the failure (1.2.1 jmxri.jar dependency http://java.sun.com/javase/technologies/core/mntr-mgmt/javamanagement/)

>>>Code
System.out.print("__________________\n");            System.out.print("System.class.forName(\"com.sun.jmx.mbeanserver.RepositorySupport\");" + "\n");
System.class.forName("com.sun.jmx.mbeanserver.RepositorySupport");

>>>Output
__________________
System.class.forName("com.sun.jmx.mbeanserver.RepositorySupport");
Exception in thread "main" java.lang.ExceptionInInitializerError
        at cli.System.Runtime.CompilerServices.RuntimeHelpers.RunClassConstructor(Unknown Source)
        at IKVM.NativeCode.java.lang.VMClass.forName0(Unknown Source)
        at java.lang.VMClass.forName0(VMClass.java)
        at java.lang.VMClass.forName(VMClass.java:240)
        at java.lang.Class.forName(Class.java:189)
        at com.teamcenter.fms.servercache.FMSServerCache.forceClassLoad(FMSServerCache.java:202)
        at com.teamcenter.fms.servercache.FMSServerCache.main(FMSServerCache.java:160)
Caused by: java.lang.NullPointerException
        at javax.management.ObjectName.checkComponents(ObjectName.java:246)
        at javax.management.ObjectName.<init>(ObjectName.java:178)
        at com.sun.jmx.mbeanserver.RepositorySupport.<clinit>(RepositorySupport.java:49)

>>>>>Environment
D:\ikvm>ikvm -version
IKVM.NET Launcher version 0.32.0.0
Copyright (C) 2002-2006 Jeroen Frijters
http://www.ikvm.net/

CLR version: 1.1.4322.573 (32 bit)
mscorlib: 1.0.5000.0
ikvm: 0.32.0.0
IKVM.GNU.Classpath: 0.32.0.0
IKVM.Runtime: 0.32.0.0
GNU Classpath version: 0.93