JBoss A-MQ: JMX operation addConnector() throws the following exception: java.lang.NullPointerException at org.apache.activemq.broker.TransportConnector.start(TransportConnector.java:202)

Issue

• when adding a transport connector using the JMX operation addConnector() the following NullPointerException (NPE) is thrown

java.lang.NullPointerException
    at org.apache.activemq.broker.TransportConnector.start(TransportConnector.java:202)
    at org.apache.activemq.broker.jmx.BrokerView.addConnector(BrokerView.java:358)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:75)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:279)
    at com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:112)
    at com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:46)
    at com.sun.jmx.mbeanserver.MBeanIntrospector.invokeM(MBeanIntrospector.java:237)
    at com.sun.jmx.mbeanserver.PerInterface.invoke(PerInterface.java:138)
    at com.sun.jmx.mbeanserver.MBeanSupport.invoke(MBeanSupport.java:252)
    at javax.management.StandardMBean.invoke(StandardMBean.java:405)
    at org.apache.activemq.broker.jmx.AnnotatedMBean.invoke(AnnotatedMBean.java:198)
    at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
    at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
    at javax.management.MBeanServerInvocationHandler.invoke(MBeanServerInvocationHandler.java:292)
    at com.sun.proxy.$Proxy5.addConnector(Unknown Source)
    at org.apache.activemq.broker.jmx.MBeanTest.testAddRemoveConnectorBrokerView(MBeanTest.java:1384)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at org.apache.activemq.CombinationTestSupport.runBare(CombinationTestSupport.java:107)
    at org.apache.activemq.CombinationTestSupport.runBare(CombinationTestSupport.java:113)
    at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:84)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:74)
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:202)
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:65)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)