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    <p>I follow this tutorial about "JPA in Web Service"(<a href="http://www.netbeans.org/kb/61/javaee/persistence.html" rel="nofollow noreferrer">http://www.netbeans.org/kb/61/javaee/persistence.html</a>).</p> <p>i follow this tutorial step by step, and when i compile the code , i have no problem. But when i run the program i got many error</p> <p>i already download the finish project, but it still same error, any way to handle this error?</p> <p>thx</p> <pre><code> CORE5061: Exception : java.lang.NullPointerException at com.sun.enterprise.util.InvocationManagerImpl.preInvoke(InvocationManagerImpl.java:136) at com.sun.appserv.server.ServerLifecycleModule.preInvoke(ServerLifecycleModule.java:178) at com.sun.appserv.server.ServerLifecycleModule.postEvent(ServerLifecycleModule.java:219) at com.sun.appserv.server.ServerLifecycleModule.onTermination(ServerLifecycleModule.java:277) at com.sun.appserv.server.LifecycleModuleService.onTermination(LifecycleModuleService.java:496) at com.sun.enterprise.server.ApplicationServer.onTermination(ApplicationServer.java:591) at com.sun.enterprise.server.PEMain.run(PEMain.java:432) at com.sun.enterprise.server.PEMain.main(PEMain.java:336) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.sun.enterprise.server.PELaunch.main(PELaunch.java:415) java.lang.RuntimeException: EMBEDDED Broker start failure:code = 1 at com.sun.messaging.jms.ra.EmbeddedBrokerRunner.start(EmbeddedBrokerRunner.java:268) at com.sun.messaging.jms.ra.ResourceAdapter.start(ResourceAdapter.java:472) at com.sun.enterprise.connectors.ActiveInboundResourceAdapter$1.run(ActiveInboundResourceAdapter.java:178) at java.security.AccessController.doPrivileged(Native Method) at com.sun.enterprise.connectors.ActiveInboundResourceAdapter.startResourceAdapter(ActiveInboundResourceAdapter.java:174) at com.sun.enterprise.connectors.ActiveInboundResourceAdapter.&lt;init&gt;(ActiveInboundResourceAdapter.java:132) at com.sun.enterprise.connectors.system.ActiveJmsResourceAdapter.&lt;init&gt;(ActiveJmsResourceAdapter.java:234) at com.sun.enterprise.connectors.ActiveRAFactory.createActiveResourceAdapter(ActiveRAFactory.java:107) at com.sun.enterprise.connectors.ResourceAdapterAdminServiceImpl.createActiveResourceAdapter(ResourceAdapterAdminServiceImpl.java:300) at com.sun.enterprise.connectors.ResourceAdapterAdminServiceImpl.createActiveResourceAdapter(ResourceAdapterAdminServiceImpl.java:445) at com.sun.enterprise.connectors.ConnectorRuntime.createActiveResourceAdapter(ConnectorRuntime.java:230) at com.sun.enterprise.jms.JmsProviderLifecycle.onStartup(JmsProviderLifecycle.java:428) at com.sun.enterprise.server.ApplicationServer.onStartup(ApplicationServer.java:446) at com.sun.enterprise.server.ondemand.OnDemandServer.onStartup(OnDemandServer.java:134) at com.sun.enterprise.server.PEMain.run(PEMain.java:409) at com.sun.enterprise.server.PEMain.main(PEMain.java:336) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.sun.enterprise.server.PELaunch.main(PELaunch.java:415) RAR6035 : Resource adapter start failed : {0} javax.resource.spi.ResourceAdapterInternalException: MQJMSRA_RA4001: start:Aborting:Exception starting EMBEDDED broker=EMBEDDED Broker start failure:code = 1 at com.sun.messaging.jms.ra.ResourceAdapter.start(ResourceAdapter.java:476) at com.sun.enterprise.connectors.ActiveInboundResourceAdapter$1.run(ActiveInboundResourceAdapter.java:178) at java.security.AccessController.doPrivileged(Native Method) at com.sun.enterprise.connectors.ActiveInboundResourceAdapter.startResourceAdapter(ActiveInboundResourceAdapter.java:174) at com.sun.enterprise.connectors.ActiveInboundResourceAdapter.&lt;init&gt;(ActiveInboundResourceAdapter.java:132) at com.sun.enterprise.connectors.system.ActiveJmsResourceAdapter.&lt;init&gt;(ActiveJmsResourceAdapter.java:234) at com.sun.enterprise.connectors.ActiveRAFactory.createActiveResourceAdapter(ActiveRAFactory.java:107) at com.sun.enterprise.connectors.ResourceAdapterAdminServiceImpl.createActiveResourceAdapter(ResourceAdapterAdminServiceImpl.java:300) at com.sun.enterprise.connectors.ResourceAdapterAdminServiceImpl.createActiveResourceAdapter(ResourceAdapterAdminServiceImpl.java:445) at com.sun.enterprise.connectors.ConnectorRuntime.createActiveResourceAdapter(ConnectorRuntime.java:230) at com.sun.enterprise.jms.JmsProviderLifecycle.onStartup(JmsProviderLifecycle.java:428) at com.sun.enterprise.server.ApplicationServer.onStartup(ApplicationServer.java:446) at com.sun.enterprise.server.ondemand.OnDemandServer.onStartup(OnDemandServer.java:134) at com.sun.enterprise.server.PEMain.run(PEMain.java:409) at com.sun.enterprise.server.PEMain.main(PEMain.java:336) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.sun.enterprise.server.PELaunch.main(PELaunch.java:415) Caused by: java.lang.RuntimeException: EMBEDDED Broker start failure:code = 1 at com.sun.messaging.jms.ra.EmbeddedBrokerRunner.start(EmbeddedBrokerRunner.java:268) at com.sun.messaging.jms.ra.ResourceAdapter.start(ResourceAdapter.java:472) ... 19 more </code></pre>
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