A DESCRIPTION OF THE PROBLEM :
When MBeanServer MBeanServer(null, name), it should throw "RuntimeOperationsException – Wraps a java.lang.IllegalArgumentException: The object passed in parameter is null or no object name is specified."
But it throws NPE

ACTUAL -
Exception in thread "main" java.lang.NullPointerException: Cannot invoke "Object.getClass()" because "object" is null

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import javax.management.MBeanServer;
import javax.management.MBeanServerFactory;
import javax.management.ObjectName;
import javax.management.RuntimeOperationsException;

public class ExceptionDiagnosisTest {
    public static void main(String[] args) throws Exception {
        try {
            MBeanServer mbs = MBeanServerFactory.newMBeanServer();
            ObjectName name = new ObjectName("a:b=c");
            mbs.registerMBean(null, name);
        } catch (RuntimeOperationsException e) {
            e.printStackTrace();
        }

    }
}
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