Java.lang.NullPointerException within ZPM on ZCM 10.3

I'm trying to resolve a problem with Patch Management after applying the update for ZCM (10.3.0a) to my ZCM 10.2.2 server. I receive the following error when I select any patches in patch management.
java.lang.NullPointerException
at com.patchlink.sapphire.web.pages.vulnerability.UIU til.rebootRequired(UIUtil.java:39)
at com.patchlink.sapphire.web.pages.vulnerability.Vie wVulnerabilityInfoSnapshot.bindGrid(ViewVulnerabil ityInfoSnapshot.java:203)
at com.patchlink.sapphire.web.pages.vulnerability.Vie wVulnerabilityInfoSnapshot.prerender(ViewVulnerabi lityInfoSnapshot.java:150)
at com.novell.web.controls.WebControl.preRenderRecurs iveInternal(WebControl.java:2626)
at com.novell.web.controls.WebControl.preRenderRecurs iveInternal(WebControl.java:2637)
at com.novell.web.controls.WebControl.preRenderRecurs iveInternal(WebControl.java:2637)
at com.novell.web.controls.WebControl.preRenderRecurs iveInternal(WebControl.java:2637)
at com.novell.zenworks.fw.web.internal.layout.Snapsho tTemplate.preRenderRecursiveInternal(SnapshotTempl ate.java:460)
at com.novell.web.controls.WebControl.preRenderRecurs iveInternal(WebControl.java:2637)
at com.novell.web.controls.WebControl.preRenderRecurs iveInternal(WebControl.java:2637)
at com.novell.web.controls.WebControl.preRenderRecurs iveInternal(WebControl.java:2637)
at com.novell.web.controls.WebControl.preRenderRecurs iveInternal(WebControl.java:2637)
at com.novell.web.controls.WebControl.preRenderRecurs iveInternal(WebControl.java:2637)
at com.novell.web.controls.WebControl.preRenderRecurs iveInternal(WebControl.java:2637)
at com.novell.web.controls.WebControl.preRenderRecurs iveInternal(WebControl.java:2637)
at com.novell.web.controls.WebControl.preRenderRecurs iveInternal(WebControl.java:2637)
at com.novell.web.controls.WebControl.preRenderRecurs iveInternal(WebControl.java:2637)
at com.novell.web.controls.WebControl.preRenderRecurs iveInternal(WebControl.java:2637)
at com.novell.web.controls.Page.internalProcessReques t(Page.java:599)
at com.novell.web.controls.Page.processRequest(Page.j ava:528)
at com.novell.zenworks.fw.web.internal.layout.Index.p rocessRequest(Index.java:518)
at com.novell.web.internal.controls.PageTag.doEndTag( PageTag.java:86)
at org.apache.jsp.jsp.index_jsp._jspService(index_jsp .java:193)
at org.apache.jasper.runtime.HttpJspBase.service(Http JspBase.java:98)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:803)
at org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:328)
at org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:315)
at org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:265)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:803)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.ApplicationDispatcher.inv oke(ApplicationDispatcher.java:691)
at org.apache.catalina.core.ApplicationDispatcher.pro cessRequest(ApplicationDispatcher.java:469)
at org.apache.catalina.core.ApplicationDispatcher.doF orward(ApplicationDispatcher.java:364)
at org.apache.catalina.core.ApplicationDispatcher.for ward(ApplicationDispatcher.java:301)
at com.novell.web.NJWCServlet.serviceImpl(NJWCServlet .java:97)
at com.novell.zenworks.fw.web.internal.ZENworksServle t.service(ZENworksServlet.java:84)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:803)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:188)
at com.patchlink.sapphire.web.pages.vulnerability.ses sion.HibernateSessionFilter.doFilter(HibernateSess ionFilter.java:75)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:210)
at org.apache.catalina.core.StandardContextValve.invo ke(StandardContextValve.java:174)
at org.apache.catalina.authenticator.AuthenticatorBas e.invoke(AuthenticatorBase.java:525)
at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invok e(StandardEngineValve.java:108)
at com.novell.zenworks.tomcat.ZENRequestValve.invoke( ZENRequestValve.java:1196)
at org.apache.catalina.connector.CoyoteAdapter.servic e(CoyoteAdapter.java:151)
at org.apache.coyote.http11.Http11Processor.process(H ttp11Processor.java:870)
at org.apache.coyote.http11.Http11BaseProtocol$Http11 ConnectionHandler.processConnection(Http11BaseProt ocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.process Socket(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThr ead.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlR unnable.run(ThreadPool.java:685)
at java.lang.Thread.run(Thread.java:595)
I located the msi installation files in C:\Program Files\Novell\ZENworks\install\downloads\msi and ran the following in an attempt to repair the installation thinking something might be corrupt
novell-zenworks-java-utilities-server-10.3.0.27209
novell-zenworks-java-utilities-langs-server-10.3.0.27209
novell-zenworks-patch-10.3.0.53676
novell-zenworks-patch-langs-client-10.3.0.53702
novell-zenworks-patch-management-agent-10.3.0.31
novell-zenworks-patch-management-server-10.3.0.31
I have also tried to remove the /share/tomcat/work/Catalina/localhost
as mentioned in TID 7000434, but this did not help.
We are running ZCM 10.3 on a Windows Server 2008 (32-bit) server.
If anyone has a suggestion, your help is much appreciated.
Thanks,
Travis

tfahlman,
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posting. That concerns us, and has triggered this automated reply.
Has your problem been resolved? If not, you might try one of the following options:
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C:\wrox-axis>java chapter5.AttachmentServiceClient
java.lang.NullPointerException
at org.apache.axis.AxisFault.makeFault(Unknown Source)
at org.apache.axis.SOAPPart.getAsString(Unknown Source)
at org.apache.axis.SOAPPart.getAsBytes(Unknown Source)
at org.apache.axis.Message.getContentLength(Unknown Source)
at org.apache.axis.transport.http.HTTPSender.invoke(Unknown Source)
at org.apache.axis.strategies.InvocationStrategy.visit(Unknown Source)
at org.apache.axis.SimpleChain.doVisiting(Unknown Source)
at org.apache.axis.SimpleChain.invoke(Unknown Source)
at org.apache.axis.client.AxisClient.invoke(Unknown Source)
at org.apache.axis.client.Call.invoke(Unknown Source)
at org.apache.axis.client.Call.invoke(Unknown Source)
at org.apache.axis.client.Call.invoke(Unknown Source)
at org.apache.axis.client.Call.invoke(Unknown Source)
at chapter5.AttachmentServiceClient.main(AttachmentServiceClient.java:45
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wn Source)
at org.apache.axis.encoding.SerializationContextImpl.serializeActual(Unk
nown Source)
at org.apache.axis.encoding.SerializationContextImpl.serialize(Unknown S
ource)
at org.apache.axis.encoding.SerializationContextImpl.outputMultiRefs(Unk
nown Source)
at org.apache.axis.message.SOAPEnvelope.outputImpl(Unknown Source)
at org.apache.axis.message.MessageElement.output(Unknown Source)
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Service wsdlService = wsdlDefinition.getService(new QName("http://xmlns.oracle.com/BRM/schemas/BusinessOpcodes") );
org.collaxa.thirdparty.apache.wsif.WSIFServiceFactory wsifFactory = org.collaxa.thirdparty.apache.wsif.WSIFServiceFactory.newInstance();
WSIFService wsifService = wsifFactory.getService(wsdlDefinition, wsdlService);
String portChosen = null;
Iterator it = wsifService.getAvailablePortNames();
while (it.hasNext()) {
String nextPort = (String) it.next();
if (portChosen == null)
portChosen = nextPort;
System.out.println(" - " + nextPort);
WSIFPort port_wsif = wsifService.getPort();
System.out.println("After that !!");
//WSIFPort javaPort = wsifService.getPort("");
}catch(WSIFException wsifEx){
System.out.println("Within WSIF exceptions");
wsifEx.printStackTrace();
====================================================================
ERROR:
====================================================================
- WSIF0007I: Using WSIFProvider 'oracle.tip.adapter.fw.wsif.jca.WSIFDynamicProvider_JCA' for namespaceURI 'http://xmlns.oracle.com/pcbpel/wsdl/jca/'
- BRMCUSTService_pt
After preferred portoracle.j2ee.ws.wsdl.DefinitionImpl@1d86fd3
After preferred portclass org.collaxa.thirdparty.apache.wsif.base.WSIFServiceImpl
Within exceptions
java.lang.NullPointerException
     at org.collaxa.thirdparty.apache.wsif.base.WSIFServiceImpl.createDynamicWSIFPort(WSIFServiceImpl.java:417)
     at org.collaxa.thirdparty.apache.wsif.base.WSIFServiceImpl.getPort(WSIFServiceImpl.java:467)
     at org.collaxa.thirdparty.apache.wsif.base.WSIFServiceImpl.getPort(WSIFServiceImpl.java:429)
     at WSIFSample4.main(WSIFSample4.java:62)
=====================================================================
The jars used here are orabpel related jars, which has its own JCA provider and implementation classes. There are similar errors reported in Axis WSIF forums for:
Null pointer Exception at apache.wsif.base.WSIFServiceImpl.createDynamicWSIFPort
But no concrete answers to it.
Has anyone tried using WSIF in Oc4j,
Any help is appreciated.
Thanks,

It says "*unique* constraint (XXEA_GLOBAL.XXEA_GL_JOURNAL_IN_STG_U1) violated". Pls check if your data (for insertion) is violating this constraint.

Java.lang.NullPointerException in LuceneEventQueryExecutor

Hi,
I have build a new report that works fine with in iReport. However, if I run
the report from within SLM I get:
Wed Jun 29 16:03:48 GMT+00:00
2011|WARNING|Thread-3416|com.novell.reports.jasper.JasperReportManager $Async
hronousReportGenerator.reportFillError
Error generating report Bericht 1: java.lang.NullPointerException
at
com.novell.reports.jasper.data.event.LuceneEventQu eryExecutor.getParameterRe
placement(LuceneEventQueryExecutor.java:206)
at
com.novell.reports.jasper.data.event.LuceneEventQu eryExecutor.createDatasour
ce(LuceneEventQueryExecutor.java:81)
at
net.sf.jasperreports.engine.fill.JRFillDataset.cre ateQueryDatasource(JRFillD
ataset.java:685)
at
net.sf.jasperreports.engine.fill.JRFillDataset.ini tDatasource(JRFillDataset.
java:605)
at
net.sf.jasperreports.engine.fill.JRBaseFiller.setP arameters(JRBaseFiller.jav
a:1223)
at
net.sf.jasperreports.engine.fill.JRBaseFiller.fill (JRBaseFiller.java:853)
at
net.sf.jasperreports.engine.fill.JRBaseFiller.fill (JRBaseFiller.java:802)
at
net.sf.jasperreports.engine.fill.JRFillSubreport.f illSubreport(JRFillSubrepo
rt.java:564)
at
net.sf.jasperreports.engine.fill.JRSubreportRunnab le.run(JRSubreportRunnable
..java:63)
at
net.sf.jasperreports.engine.fill.JRThreadSubreport Runner.run(JRThreadSubrepo
rtRunner.java:209)
at java.lang.Thread.run(Thread.java:619)
Any hints on how to debug this? How can I find the parameter that causes the
NPE?
Norbert

Hi,
I have build a new report that works fine with in iReport. However, if I run
the report from within SLM I get:
Wed Jun 29 16:03:48 GMT+00:00
2011|WARNING|Thread-3416|com.novell.reports.jasper.JasperReportManager $Async
hronousReportGenerator.reportFillError
Error generating report Bericht 1: java.lang.NullPointerException
at
com.novell.reports.jasper.data.event.LuceneEventQu eryExecutor.getParameterRe
placement(LuceneEventQueryExecutor.java:206)
at
com.novell.reports.jasper.data.event.LuceneEventQu eryExecutor.createDatasour
ce(LuceneEventQueryExecutor.java:81)
at
net.sf.jasperreports.engine.fill.JRFillDataset.cre ateQueryDatasource(JRFillD
ataset.java:685)
at
net.sf.jasperreports.engine.fill.JRFillDataset.ini tDatasource(JRFillDataset.
java:605)
at
net.sf.jasperreports.engine.fill.JRBaseFiller.setP arameters(JRBaseFiller.jav
a:1223)
at
net.sf.jasperreports.engine.fill.JRBaseFiller.fill (JRBaseFiller.java:853)
at
net.sf.jasperreports.engine.fill.JRBaseFiller.fill (JRBaseFiller.java:802)
at
net.sf.jasperreports.engine.fill.JRFillSubreport.f illSubreport(JRFillSubrepo
rt.java:564)
at
net.sf.jasperreports.engine.fill.JRSubreportRunnab le.run(JRSubreportRunnable
..java:63)
at
net.sf.jasperreports.engine.fill.JRThreadSubreport Runner.run(JRThreadSubrepo
rtRunner.java:209)
at java.lang.Thread.run(Thread.java:619)
Any hints on how to debug this? How can I find the parameter that causes the
NPE?
Norbert

Java.lang.nullpointerexception in Guided Procedure

Hello Guru's,
We have integrated a WD4J application in Guided Procedure.
And within this application there is a Submit Button, on clicking it we are getting Java.lang.NullPointerException.
The same application works fine for other users, only 1 user is having this issue.
And I tried replicating the same in our Development system and it works fine.
This issue occurs only in Production.
Full Message Text
Exception occured during processing of Web Dynpro application sap.com/cafeugpuiinst/AInstantiation. The causing exception is nested.
[EXCEPTION]
java.lang.NullPointerException
at com.sfwmd.Contract.newcontract(Contract.java:798)
at com.sfwmd.wdp.InternalContract.newcontract(InternalContract.java:814)
at com.sfwmd.ContractView.onActionComplete(ContractView.java:5075)
at com.sfwmd.wdp.InternalContractView.wdInvokeEventHandler(InternalContractView.java:1142)
at com.sap.tc.webdynpro.progmodel.generation.DelegatingView.invokeEventHandler(DelegatingView.java:87)
at com.sap.tc.webdynpro.progmodel.controller.Action.fire(Action.java:67)
at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.doHandleActionEvent(WindowPhaseModel.java:420)
at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.processRequest(WindowPhaseModel.java:132)
at com.sap.tc.webdynpro.clientserver.window.WebDynproWindow.processRequest(WebDynproWindow.java:335)
at com.sap.tc.webdynpro.clientserver.cal.AbstractClient.executeTasks(AbstractClient.java:143)
at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.doProcessing(ApplicationSession.java:333)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessingStandalone(ClientSession.java:741)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessing(ClientSession.java:694)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doProcessing(ClientSession.java:253)
at com.sap.tc.webdynpro.clientserver.session.RequestManager.doProcessing(RequestManager.java:149)
at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doContent(DispatcherServlet.java:62)
at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doPost(DispatcherServlet.java:53)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:401)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:266)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:386)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:364)
at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:1039)
at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:265)
at com.sap.engine.services.httpserver.server.Client.handle(Client.java:95)
at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:175)
at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:33)
at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java:41)
at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)
at java.security.AccessController.doPrivileged(Native Method)
at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:104)
at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:176)
Full Message Text
application [webdynpro/dispatcher] Processing HTTP request to servlet [dispatcher] finished with error. The error is: java.lang.NullPointerException
at com.sfwmd.Contract.newcontract(Contract.java:798)
at com.sfwmd.wdp.InternalContract.newcontract(InternalContract.java:814)
at com.sfwmd.ContractView.onActionComplete(ContractView.java:5075)
at com.sfwmd.wdp.InternalContractView.wdInvokeEventHandler(InternalContractView.java:1142)
at com.sap.tc.webdynpro.progmodel.generation.DelegatingView.invokeEventHandler(DelegatingView.java:87)
at com.sap.tc.webdynpro.progmodel.controller.Action.fire(Action.java:67)
at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.doHandleActionEvent(WindowPhaseModel.java:420)
at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.processRequest(WindowPhaseModel.java:132)
at com.sap.tc.webdynpro.clientserver.window.WebDynproWindow.processRequest(WebDynproWindow.java:335)
at com.sap.tc.webdynpro.clientserver.cal.AbstractClient.executeTasks(AbstractClient.java:143)
at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.doProcessing(ApplicationSession.java:333)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessingStandalone(ClientSession.java:741)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessing(ClientSession.java:694)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doProcessing(ClientSession.java:253)
at com.sap.tc.webdynpro.clientserver.session.RequestManager.doProcessing(RequestManager.java:149)
at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doContent(DispatcherServlet.java:62)
at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doPost(DispatcherServlet.java:53)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:401)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:266)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:386)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:364)
at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:1039)
at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:265)
at com.sap.engine.services.httpserver.server.Client.handle(Client.java:95)
at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:175)
at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:33)
at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java:41)
at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)
at java.security.AccessController.doPrivileged(Native Method)
at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:104)
at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:176)
Full Message Text
application [webdynpro/dispatcher] Processing HTTP request to servlet [dispatcher] finished with error.
The error is: java.lang.NullPointerException: null
Exception id: [0003BAC3E095007900000C830000620E0004B61AE95D50D6]
Please assist in resolving this issue.
Thanks & Regards,
Pramod

Hi Maksim,
Thanks for the reply. you are right NPE is at 798 line but this issue is only with one user, for others it works fine. That is my issue.
Here is the code at 798 :
wdThis.wdFireEventCallContractView(wdContext.currentNewOutputElement().getW_Zzconnum(),flag);
public INewOutputElement(InternalContract delegate, com.sap.tc.webdynpro.progmodel.gci.IGCINodeInfo info, Object modelInstance) {
      super(info, modelInstance);
      this.gen_modelInstance = (com.s.insertmodel.Z_Bapi_Insert_Contract_Data_Output) modelInstance;
      gen_delegate = delegate;
Can you look at this code and tell me what is wrong?
Thanks & Regards,
Pramod

Java.lang.NullPointerException? only on firefox? HELP

ok, so while running any java applets, i get this error
java.lang.NullPointerException
at com.sun.deploy.net.proxy.DynamicProxyManager.reset(Unknown Source)
at com.sun.deploy.net.proxy.DeployProxySelector.reset(Unknown Source)
at sun.plugin.AppletViewer.initEnvironment(Unknown Source)
i am not a java coder, i am just trying to use java applets created by people.
the strange thing is, this only happens on mozzila firefox, and only on my one desktop, someone else who has a desktop on my computer can run java perfectly! PLEASE HELP! how can i fix this so i can use java applets?

I had exactly this same problem appear from out of the blue a week ago.
The solution for me was to reset the general.useragent.override config parameter.
To be precise, I opened the about:config page, searched for and found the general.useragent.override parameter, right-clicked it and selected the "reset" option. The value was thereby replaced with an empty string, like "", and after I closed and re-opened firefox even the base entry for general.useragent.override was gone.
Considerable time was spent on this problem, and none of the following made any difference: un/reinstalling the JRE, un/reinstalling firefox, deleted various java directories from c:\ such as in program files, temp, windows, application data, etc.
Curiously, using the Java control panel config tool to change Network Settings did have some effect. Selecting Direct Connection for proxy settings would eliminate the nullpointerexception, but also disable the java plugin. the error could be recreated simply by opening the Java Console from within firefox, and typing the "P" command, which reloads the proxy configuration.
For those who may care to research this further, my exact useragent override string was, between the quotes: "Mozilla/4.0 (Macromedia Flash Player 8/8;compatible; MSIE 6.0; Windows NT 5.1; (R1 1.5); .NET CLR 1.1.4322) " Now, that parameter was set months ago, and java applets had been working fine until just recently, so clearly there is some odd combination of problems at work. I can't help but suspect some automatic update, perhaps to firefox 2.0.0.7, was responsible?

Java.lang.NullPointerException when writing to a textfield..help please?

Hi guys,
I'm getting a java.lang.NullPointerException (with no other details of error) when i try to write to a textfield on my GUI. the line: TF1.setText("F"); is where the problem is occurring. that line is within a loop ->
               if(freq >87 && freq < 100)
                                   System.out.println("Note =F" +freq);
                                   TF1.setText("F");
the textfield has been constructed and initialised and given an initial value. what i need to happen is the string in the textfield to be constantly updated (overwritten) with the new string.
the initial value from      TextField TF1= new TextField("", 10);
TF1.setText("blank");
works fine, but one the loop above is entered, the current frequency is printed to the command line and then "java.lang.NullPointerException" is thrown.
I'm struggling with this, and have a deadline to meet so I would much appreciate some help.

The Gui class is this:
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.Panel;
import java.awt.TextField;
import javax.swing.JFrame;
import javax.swing.*;
public class Gui extends JFrame{
public static void main(String args[])
Project project = new Project();
project.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
     project.setSize( 250, 200 ); // set frame size
project.setVisible( true ); // display frame
// new Project(){//constructor
     Panel p, p1;
p = new Panel();
          p.setLayout (new FlowLayout(FlowLayout.LEFT,5,5));
          project.add(p, BorderLayout.NORTH);
     p1 = new Panel();
     p1.setLayout (new FlowLayout(FlowLayout.LEFT,5,5));
p1.setLayout (new GridLayout(4,1));
project.setTitle("Guitar Tuner Prototype");
     TextField TF1= new TextField("", 10);
TF1.setText("blank");
     p1.add(TF1);
     TF1.setVisible(true);
     p1.setVisible(true);
     p.add(p1);
//Capture input data from the microphone
project.captureAudio();
project.captureThread();
}//end constructor
//end main
The project.java class has the "private TextField TF1; at the top. the project.java class also contains the loop thats writing to the texfield as specified in th original post..

On deploy: java.lang.NullPointerException in WsdlCompleterUtil.isAncestor

Hello,
I downloaded JDeveloper 10.1.3.2.0 and Oracle BPEL PM 10.1.3.1.0 yesterday and built simple BPEL process with one single invoke activity. The BPEL process validates in JDeveloper but on deploy I get following stack trace -
Process "ZMFFlow" (revision "v2007_05_30__54686") successfully compiled.
<2007-05-31 10:36:50,448> <INFO> <default.collaxa.cube.engine.deployment> Proces
s "ZMFFlow" (revision "v2007_05_30__54686") successfully loaded.
<2007-05-31 10:36:50,698> <ERROR> <default.collaxa.cube.engine> <DomainObserverR
egistry::notify> Error while notifying observer class com.collaxa.cube.ws.soap.o
c4j.BPELOC4JServlet$1 with aspect class com.collaxa.cube.engine.observer.Process
InitAspect
java.lang.NullPointerException
at oracle.j2ee.ws.common.processor.modeler.wsdl.WsdlCompleterUtil.isAnce
stor(WsdlCompleterUtil.java:344)
at oracle.j2ee.ws.common.processor.modeler.wsdl.WsdlCompleterUtil.cacula
teRelativePath(WsdlCompleterUtil.java:323)
at oracle.j2ee.ws.common.processor.modeler.wsdl.WsdlCompleterUtil.comple
te(WsdlCompleterUtil.java:140)
at oracle.j2ee.ws.server.provider.ProviderConfigImpl.addService(Provider
ConfigImpl.java:200)
at oracle.j2ee.ws.server.provider.ProviderConfigImpl.addService(Provider
ConfigImpl.java:116)
at com.collaxa.cube.ws.soap.oc4j.BPELOC4JServlet$1.update(BPELOC4JServle
t.java:117)
at com.collaxa.cube.engine.observer.DomainObserverRegistry.notify(Domain
ObserverRegistry.java:301)
My BPEL process is -
<?xml version = "1.0" encoding = "UTF-8" ?>

<process name="ZMFFlow" targetNamespace="http://ZMFFlow/0"
xmlns="http://schemas.xmlsoap.org/ws/2003/03/business-process/"
xmlns:bpws="http://schemas.xmlsoap.org/ws/2003/03/business-process/"
xmlns:xp20="http://www.oracle.com/XSL/Transform/java/oracle.tip.pc.services.functions.Xpath20"
xmlns:ns1="http://serena.com/zmf/wsdl/package-services"
xmlns:ldap="http://schemas.oracle.com/xpath/extension/ldap"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:wsdlDefault="http://www.eclipse.org/alf/schema/EventBase/1"
xmlns:bpelx="http://schemas.oracle.com/bpel/extension"
xmlns:client="http://ZMFFlow/0"
xmlns:ora="http://schemas.oracle.com/xpath/extension"
xmlns:orcl="http://www.oracle.com/XSL/Transform/java/oracle.tip.pc.services.functions.ExtFunc">

<partnerLinks>

<partnerLink name="client" partnerLinkType="client:AlfServiceFlow"
myRole="AlfServiceFlowProvider"/>
<partnerLink name="ZMFplt" partnerRole="ZMFProvider"
partnerLinkType="ns1:ZMFPartnerLinkType"/>
</partnerLinks>

<variables>


<variable name="Invoke_1_approve_InputVariable"
messageType="ns1:approveRequestMessage"/>
<variable name="Invoke_1_approve_OutputVariable"
messageType="ns1:approveResponseMessage"/>
<variable name="receiveInput_TEMPEventNotice_InputVariable"
messageType="wsdlDefault:EventNotice"/>
</variables>

<sequence name="main">

<receive name="receiveInput" partnerLink="client"
portType="wsdlDefault:ALFServiceFlow"
operation="TEMPEventNotice"
variable="receiveInput_TEMPEventNotice_InputVariable"
createInstance="yes"/>

<invoke name="Invoke_1" partnerLink="ZMFplt"
portType="ns1:ZMFPackageServicesPT" operation="approve"
inputVariable="Invoke_1_approve_InputVariable"
outputVariable="Invoke_1_approve_OutputVariable"/>
</sequence>
</process>
Sorry for the long post but I would also like to send in wsdls so that someone can try to reproduce the problem. Can anyone tell me what this error means? What could be wrong in my process or wsdls?
Thank you,
Meghana

I think I have found when I get this error and probably I have found a bug. I will appreciate if someone can confirm this.
In my BPEL project setup, my BPEL process's wsdl file imports another wsdl from different namespace. Here is sample snippet -
<wsdl:definitions targetNamespace="http://namespace/1">
<wsdl:import namespace="http://namespace/2" location="resources/another.wsdl"/>
<plnk:partnerLinkType....../>
</wsdl:definitions>
Please let me know. I checked the bundled samples with Oracle BPEL PM and did not find any similar case where process wsdl imports another wsdl.
Thank you.
Meghana

"java.lang.NullPointerException" using the calender-iview

Hi,
We are using SAP NetWeaver Portal 6.0.14.0.0, KM-Version 6.0.14.2.0 and Microsoft Exchange 2000.
Our SysAdmin has integrated Exchange into the portal and I integrated two calender-iviews (one-month-overview & one-daay-overview). Until last week everything worked fine and everybody was able to see his appointments within this two iviews. But now we get the error-message "
java.lang.NullPointerException" in this iviews.
We haven´t changed anything, this error-message appeared suddenly. Has anybody an idea what´s wrong?
Thanks for help.
Greetings,
Sven

Hi Sven,
(a) You should definitely check the log files (default.X.trc) to get a more specific idea where the error comes from.
(b) If you don't realise immediately where the problem comes from when watching the traces, consider opening an OSS message, for at least a NPE should never be thrown on the UI.
Hope it helps
Detlev

Java.lang.NullPointerException and javaBeans

I think that part of the problem is due to some wonky requirements, but maybe not. There are three classes:
lab02.util.MySlider -- has a JSlider and a few other bits
lab02.util.ColorSelector -- has three JSliders and creates a Color (not a JColorChooser)
lab02.view.View -- the driver and JFrame, has two ColorSelectors and JTextField
However, a requirement is to have ColorSelector load as a jar file. The only way I could find of doing that was create two parallel projects: beans and lab2.
I added MySlider to the palette for ColorSelector, and then added ColorSelector to the palette. Switching over the lab2 project, I added ColorSelector to View. When I received the following error:
xception in thread "AWT-EventQueue-0" java.lang.NullPointerException
        at a00720398.lab02.util.MySlider.jSlider1StateChanged(MySlider.java:53)
        at a00720398.lab02.util.MySlider.access$000(MySlider.java:6)
        at a00720398.lab02.util.MySlider$1.stateChanged(MySlider.java:39)I then added both MySlider and ColorSlider to the Library Manager, and then added them to the library for lab2 project. Same result.
Is it a coding problem? A netbeans problem? A packaging problem? I've tried some System.out statements to try to track it down but couldn't get anywhere.
Keepin in mind that there are two projects with overlapping package structures, here's the code:
thufir@arrakis:~/bcit3621$
thufir@arrakis:~/bcit3621$ cat lab2beans/src/a00720398/lab02/util/MySlider.java
package a00720398.lab02.util;
import javax.swing.event.ChangeListener;
public class MySlider extends javax.swing.JPanel {
    private ChangeListener changeListener;
    /** Creates new form MySlider */
    public MySlider() {
        initComponents();
    public MySlider(ChangeListener changeListener) {
        this();
        this.changeListener = changeListener;
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
    // <editor-fold defaultstate="collapsed" desc="Generated
Code">//GEN-BEGIN:initComponents
    private void initComponents() {
        bindingGroup = new org.jdesktop.beansbinding.BindingGroup();
        jLabel1 = new javax.swing.JLabel();
        jSlider1 = new javax.swing.JSlider();
        jTextField1 = new javax.swing.JTextField();
        jLabel1.setText("jLabel1");
        add(jLabel1);
        jSlider1.setMaximum(255);
        jSlider1.addChangeListener(new javax.swing.event.ChangeListener() {
            public void stateChanged(javax.swing.event.ChangeEvent evt) {
                jSlider1StateChanged(evt);
        add(jSlider1);
        org.jdesktop.beansbinding.Binding binding =
org.jdesktop.beansbinding.Bindings.createAutoBinding(org.jdesktop.beansbinding.AutoBinding.UpdateStrategy.READ_WRITE,
jSlider1, org.jdesktop.beansbinding.ELProperty.create("${value}"), jTextField1,
org.jdesktop.beansbinding.BeanProperty.create("text"));
        bindingGroup.addBinding(binding);
        add(jTextField1);
        bindingGroup.bind();
    }// </editor-fold>//GEN-END:initComponents
    private void jSlider1StateChanged(javax.swing.event.ChangeEvent evt)
{//GEN-FIRST:event_jSlider1StateChanged
        // TODO add your handling code here:
        changeListener.stateChanged(evt);
    }//GEN-LAST:event_jSlider1StateChanged
    public void setName(String string) {
        jLabel1.setText(string);
    public int getValue() {
        return jSlider1.getValue();
    public void setValue(int value) {
        jSlider1.setValue(value);
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JLabel jLabel1;
    private javax.swing.JSlider jSlider1;
    private javax.swing.JTextField jTextField1;
    private org.jdesktop.beansbinding.BindingGroup bindingGroup;
    // End of variables declaration//GEN-END:variables
thufir@arrakis:~/bcit3621$
thufir@arrakis:~/bcit3621$ cat lab2beans/src/a00720398/lab02/util/ColorSelector.java
package a00720398.lab02.util;
import java.awt.Color;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
public class ColorSelector extends javax.swing.JPanel implements ChangeListener {
    private ChangeListener changeListener;
    private Color color;
    /** Creates new form ColorSelector */
    public ColorSelector() {
        initComponents();
    public ColorSelector(Color color) {
        //initComponents();
        red = new a00720398.lab02.util.MySlider(this);
        green = new a00720398.lab02.util.MySlider(this);
        blue = new a00720398.lab02.util.MySlider(this);
        setLayout(new javax.swing.BoxLayout(this, javax.swing.BoxLayout.Y_AXIS));
        add(red);
        add(green);
        add(blue);
        this.color = color;
    public ColorSelector(Color color, ChangeListener changeListener) {
        //initComponents();
        this(color);
        this.changeListener = changeListener;
        //initComponents();
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
    // <editor-fold defaultstate="collapsed" desc="Generated
Code">//GEN-BEGIN:initComponents
    private void initComponents() {
        red = new a00720398.lab02.util.MySlider();
        green = new a00720398.lab02.util.MySlider();
        blue = new a00720398.lab02.util.MySlider();
        setLayout(new javax.swing.BoxLayout(this, javax.swing.BoxLayout.Y_AXIS));
        add(red);
        add(green);
        add(blue);
    }// </editor-fold>//GEN-END:initComponents
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private a00720398.lab02.util.MySlider blue;
    private a00720398.lab02.util.MySlider green;
    private a00720398.lab02.util.MySlider red;
    // End of variables declaration//GEN-END:variables
    public void stateChanged(ChangeEvent arg0) {
        throw new UnsupportedOperationException("Not supported yet.");
        //color = new Color(red.getValue(), green.getValue(), blue.getValue());
    public Color getColor() {
        System.out.println("getColor   " + color);
        return color;
thufir@arrakis:~/bcit3621$
thufir@arrakis:~/bcit3621$ cat lab2/src/a00720398/lab02/view/Lab02View.java
package a00720398.lab02.view;
import a00720398.lab02.util.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.event.*;
public class Lab02View extends javax.swing.JFrame implements ChangeListener {
    private Color color;
    /** Creates new form Lab02View */
    public Lab02View() {
        initComponents();
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
    // <editor-fold defaultstate="collapsed" desc="Generated
Code">//GEN-BEGIN:initComponents
    private void initComponents() {
        jTextArea1 = new javax.swing.JTextArea();
        colorSelector1 = new a00720398.lab02.util.ColorSelector();
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        getContentPane().setLayout(new javax.swing.BoxLayout(getContentPane(),
javax.swing.BoxLayout.Y_AXIS));
        jTextArea1.setColumns(20);
        jTextArea1.setRows(5);
        getContentPane().add(jTextArea1);
        getContentPane().add(colorSelector1);
        pack();
    }// </editor-fold>//GEN-END:initComponents
     * @param args the command line arguments
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                //new Lab02View().setVisible(true);
                JFrame frame = new Lab02View();
                frame.setLocationRelativeTo(null);
                frame.setSize(600,400);
                frame.setVisible(true);
    public void stateChanged(ChangeEvent arg0) {
        throw new UnsupportedOperationException("Not supported yet.");
        //jTextArea1.setBackground(colorSelector1.getColor());
        //color = colorSelector1.getColor();
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private a00720398.lab02.util.ColorSelector colorSelector1;
    private javax.swing.JTextArea jTextArea1;
    // End of variables declaration//GEN-END:variables
thufir@arrakis:~/bcit3621$
thufir@arrakis:~/bcit3621$ thanks,
Thufir

don't respond to this question, it's too "large". I'm creating another thread.

Java.lang.NullPointerException encountered when configuring backup settings

Hello all,
I've been trying this morning to configure backup settings in the 10g Enterprise Manager. I logged in as SYSOPER, selected Maintenance/Configure Backup Settings, set the Disk Backup Logation to "e:\oracle_backups", but when I click OK, I get the following:
500 Internal Server Error
java.lang.NullPointerException
     at oracle.sysman.emo.util.rec.RmanObject.resetExcludedTSList(RmanObject.java:1331)
     at oracle.sysman.db.util.rec.ConfigController.onApply(ConfigController.java:486)
     at oracle.sysman.db.util.DBJobController.handleEvent(DBJobController.java:980)
     at oracle.sysman.emSDK.svlt.PageHandler.handleRequest(PageHandler.java:376)
     at oracle.sysman.db.util.UtilControllerResolver.handleRequest(UtilControllerResolver.java:128)
     at oracle.sysman.emSDK.svlt.EMServlet.myDoGet(EMServlet.java:688)
     at oracle.sysman.emSDK.svlt.EMServlet.doGet(EMServlet.java:291)
     at oracle.sysman.eml.app.Console.doGet(Console.java:285)
     at oracle.cabo.servlet.UIXServlet.doPost(Unknown Source)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:65)
     at oracle.sysman.emSDK.svlt.EMRedirectFilter.doFilter(EMRedirectFilter.java:101)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:16)
     at oracle.sysman.db.adm.inst.HandleRepDownFilter.doFilter(HandleRepDownFilter.java:133)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:20)
     at oracle.sysman.eml.app.ContextInitFilter.doFilter(ContextInitFilter.java:269)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:600)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:317)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:790)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.run(HttpRequestHandler.java:270)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.run(HttpRequestHandler.java:112)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:192)
     at java.lang.Thread.run(Thread.java:534)
Can anyone suggest what's causing this error and how to resolve it?

I've since discovered the immediate cause of this problem - it was because I was logged in as SYSOPER rather than as SYSDBA. Once I logged back in as SYSDBA, the crash disappeared and the settings were saved successfully.
It'd be nice if the EM trapped this and gave a proper error message rather than crashing within Java, though.
Message was edited by:
ptipper

Query from mySQL java.lang.NullPointerException

I have compile and run the following code but it was an error (java.lang.NullPointerException) when I click the loginButton. Please help me, I don't know how to solve the problem.
/* * Main.java * * Created on February 19, 2008, 2:50 AM */ package dataprotect; import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; import javax.swing.*; import javax.swing.JOptionPane; import dataprotect.SecretQuest; public class Main extends javax.swing.JFrame {         /** Creates new form Main */     private Connection connection;     private Statement statement;     private ResultSet rs; /** * * @author Aiman */     public void connectToDB() {         try {             connection= DriverManager.getConnection("jdbc:mysql://localhost/data_protect?user=root&password=password");             statement = connection.createStatement();                     } catch (SQLException connectException) {             System.out.println(connectException.getMessage());             System.out.println(connectException.getSQLState());             System.out.println(connectException.getErrorCode());             System.exit(1);         }     }     private void init() {         connectToDB();     }             /** Creates new form Main */     public Main() {         initComponents();     }         /** This method is called from within the constructor to     * initialize the form.     * WARNING: Do NOT modify this code. The content of this method is     * always regenerated by the Form Editor.     */     // <editor-fold defaultstate="collapsed" desc=" Generated Code ">                              private void initComponents() {         loginPanel = new javax.swing.JPanel();         userField = new javax.swing.JTextField();         passLabel = new javax.swing.JLabel();         passField = new javax.swing.JPasswordField();         loginButton = new javax.swing.JButton();         userLabel = new javax.swing.JLabel();         jLabel1 = new javax.swing.JLabel();         registerPanel = new javax.swing.JPanel();         regLabel = new javax.swing.JLabel();         registerButton = new javax.swing.JButton();         setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);         setTitle("Data Protector");         loginPanel.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));         passLabel.setText("Password:");         loginButton.setText("Login");         loginButton.addActionListener(new java.awt.event.ActionListener() {             public void actionPerformed(java.awt.event.ActionEvent evt) {                 loginButtonActionPerformed(evt);             }         });         userLabel.setText("Username:");         javax.swing.GroupLayout loginPanelLayout = new javax.swing.GroupLayout(loginPanel);         loginPanel.setLayout(loginPanelLayout);         loginPanelLayout.setHorizontalGroup(             loginPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)             .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, loginPanelLayout.createSequentialGroup()                 .addContainerGap()                 .addGroup(loginPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)                     .addComponent(userLabel, javax.swing.GroupLayout.DEFAULT_SIZE, 89, Short.MAX_VALUE)                     .addComponent(passLabel, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 89, Short.MAX_VALUE))                 .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)                 .addGroup(loginPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)                     .addComponent(loginButton)                     .addComponent(passField, javax.swing.GroupLayout.DEFAULT_SIZE, 134, Short.MAX_VALUE)                     .addComponent(userField, javax.swing.GroupLayout.DEFAULT_SIZE, 134, Short.MAX_VALUE))                 .addContainerGap())         );         loginPanelLayout.setVerticalGroup(             loginPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)             .addGroup(loginPanelLayout.createSequentialGroup()                 .addContainerGap()                 .addGroup(loginPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)                     .addComponent(userField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)                     .addComponent(userLabel))                 .addGap(16, 16, 16)                 .addGroup(loginPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)                     .addComponent(passLabel)                     .addComponent(passField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))                 .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 21, Short.MAX_VALUE)                 .addComponent(loginButton)                 .addContainerGap())         );         jLabel1.setFont(new java.awt.Font("Tahoma", 1, 18));         jLabel1.setText("Data Protector");         registerPanel.setBorder(javax.swing.BorderFactory.createEtchedBorder());         regLabel.setText("If you are first user? Please register first.");         registerButton.setText("Register");         registerButton.addActionListener(new java.awt.event.ActionListener() {             public void actionPerformed(java.awt.event.ActionEvent evt) {                 registerButtonActionPerformed(evt);             }         });         javax.swing.GroupLayout registerPanelLayout = new javax.swing.GroupLayout(registerPanel);         registerPanel.setLayout(registerPanelLayout);         registerPanelLayout.setHorizontalGroup(             registerPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)             .addGroup(registerPanelLayout.createSequentialGroup()                 .addGroup(registerPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)                     .addGroup(registerPanelLayout.createSequentialGroup()                         .addGap(93, 93, 93)                         .addComponent(registerButton))                     .addGroup(registerPanelLayout.createSequentialGroup()                         .addGap(28, 28, 28)                         .addComponent(regLabel)))                 .addContainerGap(18, Short.MAX_VALUE))         );         registerPanelLayout.setVerticalGroup(             registerPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)             .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, registerPanelLayout.createSequentialGroup()                 .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)                 .addComponent(regLabel)                 .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)                 .addComponent(registerButton)                 .addContainerGap())         );         javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());         getContentPane().setLayout(layout);         layout.setHorizontalGroup(             layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)             .addGroup(layout.createSequentialGroup()                 .addContainerGap(72, Short.MAX_VALUE)                 .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)                     .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()                         .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)                             .addComponent(registerPanel, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)                             .addComponent(loginPanel, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))                         .addGap(67, 67, 67))                     .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()                         .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 146, javax.swing.GroupLayout.PREFERRED_SIZE)                         .addGap(114, 114, 114))))         );         layout.setVerticalGroup(             layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)             .addGroup(layout.createSequentialGroup()                 .addContainerGap()                 .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 33, javax.swing.GroupLayout.PREFERRED_SIZE)                 .addGap(15, 15, 15)                 .addComponent(loginPanel, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)                 .addGap(25, 25, 25)                 .addComponent(registerPanel, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)                 .addGap(27, 27, 27))         );         pack();     }// </editor-fold>                            private void registerButtonActionPerformed(java.awt.event.ActionEvent evt) {                                              // TODO add your handling code here:   //      registerPanel a = new MainFrame();       //      a.show();                        this.setVisible(false);     }                                                  private void loginButtonActionPerformed(java.awt.event.ActionEvent evt) {                                                            Connection conn = null;         Statement stmt = null;         ResultSet rs = null;           try {         Statement statement = connection.createStatement();         rs = statement.executeQuery("select username, password from system");                         // create a statement             stmt = conn.createStatement();             // extract data from the ResultSet                 String username = userField.getText();         String password = new String(passField.getPassword());         if(username.equalsIgnoreCase(password)) {             JOptionPane.showMessageDialog(this, "Login Successful");             SecretQuest a = new SecretQuest();             a.show();                        this.setVisible(false);   }         else{     JOptionPane.showMessageDialog(this, "Incorrect username/password combination.", "Login Error", JOptionPane.ERROR_MESSAGE);                 } } catch (Exception e) {             e.printStackTrace();             System.exit(1);         }     /* try {                 java.sql.Statement s = conn.createStatement();                 java.sql.ResultSet r = s.executeQuery                 ("SELECT username, password FROM system");                 while(r.next()) {                         System.out.println (                                 r.getString("username") + " " +                                 r.getString("password") );                         }         }         catch (Exception e) {                 System.out.println(e);                 System.exit(0);                 } */     }                                                  /**     * @param args the command line arguments     */     public static void main(String args[]) {         java.awt.EventQueue.invokeLater(new Runnable() {             public void run() {                 new Main().setVisible(true);             }         });     }         // Variables declaration - do not modify                        private javax.swing.JLabel jLabel1;     private javax.swing.JButton loginButton;     private javax.swing.JPanel loginPanel;     private javax.swing.JPasswordField passField;     private javax.swing.JLabel passLabel;     private javax.swing.JLabel regLabel;     private javax.swing.JButton registerButton;     private javax.swing.JPanel registerPanel;     private javax.swing.JTextField userField;     private javax.swing.JLabel userLabel;     // End of variables declaration                      }
I'm using mysql-connector-java-5.0.8 and mysql version 5.0...Any ideas?
Thanks a lot for your help =)

Its look can't solve the error..I try to change from:
// create a statement
        stmt = conn.createStatement();
        // extract data from the ResultSetto this one as you said:
// create a statement
        stmt = connection.createStatement();
        // extract data from the ResultSetBut the same problem was happen.
After the error it appear this on output windows of NetBean 5.5:
at dataprotect.Main.loginButtonActionPerformed(Main.java:198)
        at dataprotect.Main.access$000(Main.java:17)
        at dataprotect.Main$1.actionPerformed(Main.java:76)
        at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
        at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
        at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
        at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
        at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
        at java.awt.Component.processMouseEvent(Component.java:6038)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3265)
        at java.awt.Component.processEvent(Component.java:5803)
        at java.awt.Container.processEvent(Container.java:2058)
        at java.awt.Component.dispatchEventImpl(Component.java:4410)
        at java.awt.Container.dispatchEventImpl(Container.java:2116)
        at java.awt.Component.dispatchEvent(Component.java:4240)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4322)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3986)
        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3916)
        at java.awt.Container.dispatchEventImpl(Container.java:2102)
        at java.awt.Window.dispatchEventImpl(Window.java:2429)
        at java.awt.Component.dispatchEvent(Component.java:4240)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)Edited by: Aiman on Feb 25, 2008 5:43 AM

Java.lang.NullPointerException within ZPM on ZCM 10.3

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