Can not get MBean-JMX

[Russ Ray]

I am developing a simple admin program for WebSphere Application Server. I am following the Technical Journal (from IBM) on how to accomplish this task. However, I am still not getting a populated set back. Can anyone explain or point me in the right direction?
Here is the code:
// Query for the ObjectName of the NodeAgent MBean on the given node
String query = "WebSphere:type=NodeAgent,node=" +nodeName+ ",*";
try
{
ObjectName queryName = new ObjectName(query);
Set s = adminClient.queryNames(queryName, null);
if(!s.isEmpty())
{
nodeAgent=(ObjectName)s.iterator().next();
}
if(nodeAgent == null)
{
System.out.println("Did not find this MBean >> " + queryName);
System.exit(-1);
}
}
:roll: