Null pointer exception handling

Hello everybody,
can anyone suggest me that what is the standard way of handling NullPointer exception in OAF controller files.
if you explain with examples i would be very happy.
Thanks a lot
Mofizur

Hi ,
There is only single way to handle the null pointer ,that is
If(value !=null)
// Do the manipulation with value
thanks
Pratap

Similar Messages

Give me a idea for null pointer exception handling in java

dear friends,
Now i'm doing one program thats read a xml file element and store on txt file in java.now it's working but i have one problem.The problem is the parent node have number of child node.For a example, now i read the file.The first parent have a 5 child.that time work.the next parent have a 4 child this time one child is not on there.so now my program show one run time error.thats "NullPointerException" please give me a solution.its very urgently.
advance Thanks !

import java.io.*;
import org.w3c.dom.Document;
import org.w3c.dom.*;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.DocumentBuilder;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class rsk1{
public static void main (String argv []){
try {
               int j=0,arry=0;
               FileWriter Out = new FileWriter("file1.txt");
               BufferedWriter f1 = new BufferedWriter (Out);
DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
Document doc = docBuilder.parse (new File("Transaction.xml"));
// normalize text representation
doc.getDocumentElement ().normalize ();
System.out.println ("Root element of the doc is " +
doc.getDocumentElement().getNodeName());
NodeList listOfPersons = doc.getElementsByTagName("transactionid");
int totalPersons = listOfPersons.getLength();
System.out.println("Total no of people : " + totalPersons);
arry = totalPersons * 5;
String sr[] = new String[arry];
               String s1=" ";
               int k=0;
for(int s=0; s<listOfPersons.getLength() ; s++,k++){
Node firstPersonNode = listOfPersons.item(s);
for(int r=0; r<4;r++)
if(firstPersonNode.getNodeType() == Node.ELEMENT_NODE){
Element firstPersonElement = (Element)firstPersonNode;
NodeList firstNameList = firstPersonElement.getElementsByTagName("item");
Element firstNameElement = (Element)firstNameList.item(r);
NodeList textFNList= firstNameElement.getChildNodes(); //ERROR OCCUR IN THIS LINE
sr[++j]=((Node)textFNList.item(0)).getNodeValue().trim();
}//end of if clause
}//end of for loop with s var
System.out.println("Process completed");
for(int i=1;i<=j;i++)
     f1.write(sr);
                                   f1.write(" ");
                                   if(i%3==0)
                                        f1.newLine();
f1.close();
}catch (SAXParseException err) {
System.out.println ("** Parsing error" + ", line "
+ err.getLineNumber () + ", uri " + err.getSystemId ());
System.out.println(" " + err.getMessage ());
}catch (SAXException e) {
Exception x = e.getException ();
((x == null) ? e : x).printStackTrace ();
}catch (Throwable t) {
t.printStackTrace ();
}//end of main

Java null pointer exception while getting a segment DFF handle

Hi,
my requirement is to make a field mandatory based upon a dff segment value (Y/N). i override PFR since segment is a poplist on the page (and poplists don't fire any event)
i searched in the "view source" of the page and found that segment id is ActFlexField0
when i click on save button i got "java null pointer exception"
here is code:
public void processFormRequest(OAPageContext oapagecontext, OAWebBean oawebbean) throws OAException
+{+
+//get a handle to AM+
OAApplicationModule am;
am = oapagecontext.getRootApplicationModule();
oapagecontext.writeDiagnostics(this,"Root AM=>"oapagecontext.getApplicationModule(oawebbean).getName() ,1);+
if(oapagecontext.getParameter("applyCreActBut") != null || oapagecontext.getParameter("saveDtlBut") != null)
+{+
+/*Conditional mandatoryness of IdContribuente field*/+
+// first, find the flexfield's handle+
OADescriptiveFlexBean oaDFF;
oaDFF = (OADescriptiveFlexBean)oawebbean.findIndexedChildRecursive("ActFlexField");
+//oaDFF.processFlex(oapagecontext);+
oapagecontext.writeDiagnostics(this, "Niccal: i got DFF handle", 1);
+//oapagecontext.writeDiagnostics(this, "Niccal: oamcb value is:"+oaDFF.getAttributeValue(), 1);+
+/*+
RenderingContext con = (RenderingContext) oapagecontext.getRenderingContext();
Enumeration x= null;
x= oaDFF.getChildNames(con);
oapagecontext.writeDiagnostics(this, "After getChild", 1);
while(x.hasMoreElements())
+{+
String aParamName = (String)x.nextElement();
oapagecontext.writeDiagnostics(this, "Niccal: DFF segment names are:"aParamName, 1);+
+//OAWebBean dffbeans=(OAWebBean)oaDFF.findChildRecursive(aParamName);+
+}+
+//oaDFF.mergeSegmentsWithParent(oapagecontext);+
OAMessageChoiceBean oamcb = (OAMessageChoiceBean)oaDFF.findChildRecursive("ActFlexField0");
+//String sIsForeign = (String)oaDFF.getAttributeValue("Attribute1");+
+//oapagecontext.writeDiagnostics(this, "Niccal: Attribute1 is:"+sIsForeign, 1);+
oapagecontext.writeDiagnostics(this, "Niccal: before if", 1);it's urgent
any help appreciated
thanx
N

hi Keerthi,
thank you.
i tried with below code but still unsuccesfully
+ oaDFF = (OADescriptiveFlexBean)oawebbean.findIndexedChildRecursive("ActFlexField");+
oapagecontext.writeDiagnostics(this, "Niccal: i got DFF handle", 1);
OAMessageTextInputBean mtib = (OAMessageTextInputBean)oaDFF.findChildRecursive("ActFlexField0");
oapagecontext.writeDiagnostics(this, "Niccal: before if", 1);
i am able to print 1° comment line but not second. so i think it's something wrong getting the segment handle.
anyway i'm not able to reach your suggested if statement because execution stops before.
Infact, if i comment line :OAMessageTextInputBean mtib = (OAMessageTextInputBean)oaDFF.findChildRecursive("ActFlexField0");
page doesn't give error and saves data.
any suggestion appreciated,
thanx,
N

How to handle null pointer exception

dEAR ALL
how to handle null pointer exception
public void xxperscompmatchcase(OAPageContext pageContext,
OAWebBean webBean,String cid,String pid)
xxcrmleadperslastnameVOImpl vo=getxxcrmleadperslastnameVO();
xxcrmleadcompnameVOImpl vo1=getxxcrmleadcompnameVO();
vo.setWhereClauseParams(null);
vo1.setWhereClauseParams(null);
vo.setWhereClauseParam(0,pid);
vo1.setWhereClauseParam(0,cid);
vo.executeQuery();
vo1.executeQuery();
String compname="";
String plname="";
if(vo1.first().getAttribute("CompName")!=null)
compname=(String)vo1.first().getAttribute("CompName");
else
compname="";
if((String)vo.first().getAttribute("PersLastname")!=null)
plname=(String)(String)vo.first().getAttribute("PersLastname");
else
plname="";
OAFormattedTextBean p =
(OAFormattedTextBean)webBean.findChildRecursive("personmatchcase");
OAFormattedTextBean b =
(OAFormattedTextBean)webBean.findChildRecursive("matchcase");
b.setValue(pageContext,
"The Lead is matched to company " + compname.toUpperCase());
p.setValue(pageContext,
"The Lead is matched to person " + plname.toUpperCase());
it is going to null pointer exception
how to handle this exception

Hi,
try
//Write your logic here, which can generate any exception
catch(Exception e)
//Write your exception specific code here
Regards,
Reetesh Sharma

Crystal report (crystalReportsViewer) crash with null pointer exception

Hi,
My application are simple : m_crystalReportsViewer.ViewerCore.ReportSource = report; but in throw exception null pointer when I call showDialog.
I see in code, we have method ShowTabHeader.
private void ShowTabHeader(bool isShow)
    Grid child = VisualTreeHelper.GetChild(this.tabViews, 0) as Grid;
    TabPanel panel = child.FindName("HeaderPanel") as TabPanel;
    if (!isShow)
        panel.Visibility = Visibility.Collapsed;
    else
        panel.Visibility = Visibility.Visible;
My problem : child.FindName("HeaderPanel") as TabPanel return null
=> if (!isShow)
        panel.Visibility = Visibility.Collapsed;
    else
        panel.Visibility = Visibility.Visible;
throws null pointer exception.
Do you have any idea about this?
Thanks.
Here is stack trace :
Unerwarteter Fehler im System ---> System.NullReferenceException: Object reference not set to an instance of an object.
   at SAPBusinessObjects.WPF.Viewer.ReportAlbum.ShowTabHeader(Boolean isShow)
   at SAPBusinessObjects.WPF.Viewer.ReportAlbum.ItemsChangedEventHandler(Object sender, ItemsChangedEventArgs e)
   at System.Windows.Controls.Primitives.ItemsChangedEventHandler.Invoke(Object sender, ItemsChangedEventArgs e)
   at System.Windows.Controls.ItemContainerGenerator.OnItemAdded(Object item, Int32 index)
   at System.Windows.Controls.ItemContainerGenerator.OnCollectionChanged(Object sender, NotifyCollectionChangedEventArgs args)
   at System.Windows.Controls.ItemContainerGenerator.System.Windows.IWeakEventListener.ReceiveWeakEvent(Type managerType, Object sender, EventArgs e)
   at System.Windows.WeakEventManager.DeliverEventToList(Object sender, EventArgs args, ListenerList list)
   at System.Windows.WeakEventManager.DeliverEvent(Object sender, EventArgs args)
   at System.Collections.Specialized.CollectionChangedEventManager.OnCollectionChanged(Object sender, NotifyCollectionChangedEventArgs args)
   at System.Collections.Specialized.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e)
   at System.Windows.Data.CollectionView.OnCollectionChanged(NotifyCollectionChangedEventArgs args)
   at System.Windows.Controls.ItemCollection.System.Windows.IWeakEventListener.ReceiveWeakEvent(Type managerType, Object sender, EventArgs e)
   at System.Windows.WeakEventManager.DeliverEventToList(Object sender, EventArgs args, ListenerList list)
   at System.Windows.WeakEventManager.DeliverEvent(Object sender, EventArgs args)
   at System.Collections.Specialized.CollectionChangedEventManager.OnCollectionChanged(Object sender, NotifyCollectionChangedEventArgs args)
   at System.Windows.Data.CollectionView.OnCollectionChanged(NotifyCollectionChangedEventArgs args)
   at System.Windows.Data.ListCollectionView.ProcessCollectionChangedWithAdjustedIndex(NotifyCollectionChangedEventArgs args, Int32 adjustedOldIndex, Int32 adjustedNewIndex)
   at System.Windows.Data.ListCollectionView.ProcessCollectionChanged(NotifyCollectionChangedEventArgs args)
   at System.Windows.Data.CollectionView.OnCollectionChanged(Object sender, NotifyCollectionChangedEventArgs args)
   at System.Collections.ObjectModel.ObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
   at System.Collections.ObjectModel.ObservableCollection`1.InsertItem(Int32 index, T item)
   at System.Collections.ObjectModel.Collection`1.Add(T item)
   at SAPBusinessObjects.WPF.Viewer.ReportAlbum.OnCreateNewDocumentViewComplete(CreateNewDocumentArgs args)
   at SAPBusinessObjects.WPF.Viewer.DelegateMarshaler.<>c__DisplayClass6`1.<Invoke>b__4(Object )
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
   --- End of inner exception stack trace ---
Edited by: duyhai707 on Jul 13, 2011 7:42 PM
Edited by: duyhai707 on Jul 13, 2011 8:09 PM

A lot I don't understand in here... actually, I don't understand anything in your post:
When you call ShowDialog, what exactly are you trying to show? The code is the decompiled showtabheader method of the viewer. So, are you trying to override the viewer control and reportalbum? My guess is that the null reference is for the reportalbum's child object which is not the reportalbum object of the viewer. I don't understand why the code since its all handled internally to the viewer anyhow.
Perhaps searching the forum for code sample will help?
Also, see the [WPF Demo|http://www.sdn.sap.com/irj/scn/elearn?rid=/library/uuid/a09f7025-0629-2d10-d7ae-df006a51d1a8]
Other good WPF resources to consult:
http://www.redmondpie.com/incorporate-crystal-reports-in-a-c-wpf-application/
http://www.sdn.sap.com/irj/scn/elearn?rid=/library/uuid/a09f7025-0629-2d10-d7ae-df006a51d1a8
http://www.codeproject.com/Tips/74499/Crystal-Report-in-WPF.aspx
Re: Crystal Reports for Visual Studio 2010 - WPF Viewer for .Net 4.0
http://codegain.com/articles/crystalreports/howto/incorporate-crystal-reports-in-wpf-using-c-sharp.aspx
CRVS2010 Beta - WPF Viewer, how to hide the GroupTree control?
Re: CRVS2010 Beta - WPF Viewer, how to hide the GroupTree control?
Ludek
Follow us on Twitter http://twitter.com/SAPCRNetSup
Got Enhancement ideas? Try the [SAP Idea Place|https://ideas.sap.com/community/products_and_solutions/crystalreports]

Java Null Pointer Exception while Importing a Table to IS

Hello All,
I am trying to import a table into IS and receiving a JAVA Null Pointer Exception. The table is in a Teradata database and I am able to import other tables belonging to the same schema.I get the Java error only while trying to import this one particular table. The DBA has confirmed that the table belongs to the schema/owner I am using. In any case, it seems more of a application error than a database level error. Can anyone provide any insight? Thank you in advance.

hi Keerthi,
thank you.
i tried with below code but still unsuccesfully
+ oaDFF = (OADescriptiveFlexBean)oawebbean.findIndexedChildRecursive("ActFlexField");+
oapagecontext.writeDiagnostics(this, "Niccal: i got DFF handle", 1);
OAMessageTextInputBean mtib = (OAMessageTextInputBean)oaDFF.findChildRecursive("ActFlexField0");
oapagecontext.writeDiagnostics(this, "Niccal: before if", 1);
i am able to print 1° comment line but not second. so i think it's something wrong getting the segment handle.
anyway i'm not able to reach your suggested if statement because execution stops before.
Infact, if i comment line :OAMessageTextInputBean mtib = (OAMessageTextInputBean)oaDFF.findChildRecursive("ActFlexField0");
page doesn't give error and saves data.
any suggestion appreciated,
thanx,
N

Null pointer exception while inserting a new row in ADF with jdev

Hi,
In ADF, I have retrieved some user information from LDAP server and I want to insert those values in to my table. But when I do this, I am getting a null pointer exception when I get the view object (ViewObject vo=getCRUIP002_1();). I am not sure why this happens.
Here is my code. It is urgent.
and please some one help me in fixing the issue.
ViewObject vo=getCRUIP002_1();
vo.clearCache();
vo.setMaxFetchSize(0);
vo.executeQuery();
Row newRow=vo.createRow();
vo.insertRow(newRow);
SearchResult res = (SearchResult)results.next();
Attributes attrs = res.getAttributes();
// Row newRow = vo.getCurrentRow();
newRow.setAttribute("LOGINNAME",(Object)attrs.get("sn").get().toString());
newRow.setAttribute("PASSWORDVALUE","x");
newRow.setAttribute("FIRSTNAME",(Object)attrs.get("sn").get().toString());
newRow.setAttribute("LASTNAME",(Object)attrs.get("sn").get().toString());
newRow.setAttribute("EMAIL",(Object)attrs.get("mail").get().toString());
Thanks,
Priya.S

assuming ur jdev version is 10.1.2
ViewObject vo=getCRUIP002_1();i dont think ur getting the view object hence null pointer expception.
ViewObject vo = findViewObject("MyView1");
if u r in the object class then first get the root application module and then access the View obejct from there.
In ADF if u assign a null value, u will always get the null pointer exception coz of java. Run the app in debug mode and check the values step by step, by the way there is not exception handling in ur code either, Do u know how to debug in Jdev ?
zaibi.

Null Pointer exception while invoking BPEL process

Hi all,
I am getting following exception when I am invoking a BPEL process1 (deployed in 10.1.3.1) from another BPEL Process 2 (deployed in 10.1.3.3)
<env:Envelope xmlns:env="http://schemas.xmlsoap.org/soap/envelope/">
<env:Header/>
<env:Body>
<env:Fault xmlns:env="http://schemas.xmlsoap.org/soap/envelope/">
<faultcode>env:Server</faultcode>
<faultstring>java.lang.NullPointerException</faultstring>
<faultactor/>
</env:Fault>
</env:Body>
</env:Envelope>
BPEL Process 1 is working fine when given manual input (testing through console). But when invoked using BPEL Process 2, it gives the above error. I also tried invoking BPEL Process 1 (and many other webservices deployed in 10.1.3.1) using TCPMON tool and got the same error.
Am I missing something here in configuration of 10.1.3.1 or any other issue? Please help as it is really urgent.

Contact [email protected]
Slava Imeshev wrote:
Hi Ramu,
"Ramu" <[email protected]> wrote in message
I have just upgraded to service pack #13 on WLS 5.1 from service pack #6.I am using the same code as it was with SP #6. When I invoke finder method
on entity bean, I get null pointer exception. The primary key object for the
entity bean has equals() method.
javax.ejb.FinderException: Exception executing finder:java.lang.NullPointerException
atweblogic.ejb.internal.StatefulEJBCache.getFinderContext(StatefulEJBCache.jav
a:264)
atweblogic.ejb.internal.StatefulEJBCache.getEJBContext(StatefulEJBCache.java:3
54)
Check if equals() method can handle null parameter.
Regards,
Slava Imeshev--
Rajesh Mirchandani
Developer Relations Engineer
BEA Support

Null Pointer Exception in Message Area

Hi!
I just want to get some inputs. I have this Message Area to display errors in Web Dynpro, but from time to time I get this Null Pointer Exception when an event takes place. Don't know why this happens, but the trace is not found my code.
Here's the Stack Trace:
+"java.lang.NullPointerException+
++     at com.sap.tc.webdynpro.clientserver.uielib.pattern.uradapter.MessageAreaAdapter._getConnectedControlId(MessageAreaAdapter.java:3684)++
++     at com.sap.tc.webdynpro.clientserver.uielib.pattern.uradapter.MessageAreaAdapter.access$900(MessageAreaAdapter.java:67)++
++     at com.sap.tc.webdynpro.clientserver.uielib.pattern.uradapter.MessageAreaAdapter$Rows.doNext(MessageAreaAdapter.java:2188)++
++     at com.sap.tc.webdynpro.clientserver.uielements.adaptbase.IndexedItemsIterator.next(IndexedItemsIterator.java:54)++
++     at com.sap.tc.webdynpro.clientserver.uielib.pattern.uradapter.MessageAreaAdapter.getSelection(MessageAreaAdapter.java:3653)++
++     at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.RenderManager.render(RenderManager.java:424)++
++     at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.RenderManager.render(RenderManager.java:133)++
++     at com.sap.tc.ur.renderer.ie6.SingleColumnLayoutRenderer.renderSingleColumnLayoutCellFragment(SingleColumnLayoutRenderer.java:679)++
++     at com.sap.tc.ur.renderer.ie6.SingleColumnLayoutRenderer.renderSingleColumnLayoutFragment(SingleColumnLayoutRenderer.java:253)++
++     at com.sap.tc.ur.renderer.ie6.SingleColumnLayoutRenderer.render(SingleColumnLayoutRenderer.java:74)++
++     at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.RenderManager.render(RenderManager.java:434)++
++     at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.RenderManager.render(RenderManager.java:133)++
++     at com.sap.tc.ur.renderer.ie6.ScrollContainerRenderer.renderScrollContainerFragment(ScrollContainerRenderer.java:619)++
++     at com.sap.tc.ur.renderer.ie6.ScrollContainerRenderer.render(ScrollContainerRenderer.java:74)++
++     at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.RenderManager.render(RenderManager.java:434)++
++     at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.RenderManager.render(RenderManager.java:133)++
++     at com.sap.tc.ur.renderer.ie6.TabStripRenderer.renderTabStripItemContentFragment(TabStripRenderer.java:1799)++
++     at com.sap.tc.ur.renderer.ie6.TabStripRenderer.renderTabStripFragment(TabStripRenderer.java:879)++
++     at com.sap.tc.ur.renderer.ie6.TabStripRenderer.render(TabStripRenderer.java:69)++
++     at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.RenderManager.render(RenderManager.java:434)++
++     at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.RenderManager.render(RenderManager.java:133)++
++     at com.sap.tc.ur.renderer.ie6.MatrixLayoutRenderer.renderMatrixLayoutCellFragment(MatrixLayoutRenderer.java:790)++
++     at com.sap.tc.ur.renderer.ie6.MatrixLayoutRenderer.renderMatrixLayoutRowFragment(MatrixLayoutRenderer.java:376)++
++     at com.sap.tc.ur.renderer.ie6.MatrixLayoutRenderer.renderMatrixLayoutFragment(MatrixLayoutRenderer.java:326)++
++     at com.sap.tc.ur.renderer.ie6.MatrixLayoutRenderer.render(MatrixLayoutRenderer.java:79)++
++     at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.RenderManager.render(RenderManager.java:434)++
++     at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.RenderManager.render(RenderManager.java:133)++
++     at com.sap.tc.ur.renderer.ie6.ScrollContainerRenderer.renderScrollContainerFragment(ScrollContainerRenderer.java:619)++
++     at com.sap.tc.ur.renderer.ie6.ScrollContainerRenderer.render(ScrollContainerRenderer.java:74)++
++     at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.RenderManager.render(RenderManager.java:434)++
++     at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.RenderManager.render(RenderManager.java:133)++
++     at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.UiWindowRenderer.render(UiWindowRenderer.java:52)++
++     at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.RenderManager.render(RenderManager.java:434)++
++     at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.RenderManager.render(RenderManager.java:133)++
++     at com.sap.tc.webdynpro.clientimpl.html.client.HtmlClient.sendHtml(HtmlClient.java:1058)++
++     at com.sap.tc.webdynpro.clientimpl.html.client.HtmlClient.fillDynamicTemplateContext(HtmlClient.java:458)++
++     at com.sap.tc.webdynpro.clientimpl.html.client.HtmlClient.sendResponse(HtmlClient.java:1245)++
++     at com.sap.tc.webdynpro.clientimpl.html.client.HtmlClient.retrieveData(HtmlClient.java:253)++
++     at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.doRetrieveData(WindowPhaseModel.java:595)++
++     at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.processRequest(WindowPhaseModel.java:156)++
++     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:321)++
++     at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessingStandalone(ClientSession.java:713)++
++     at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessing(ClientSession.java:666)++
++     at com.sap.tc.webdynpro.clientserver.session.ClientSession.doProcessing(ClientSession.java:250)++
++     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:102)++
++     at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:172)"++
Just wondering if this can be solved on my end or is this a glitch? Would really appreciate some inputs!
Thanks!

Hi,
Here two possibility
1. This is the case when we get something as return form the BAPI/RFC and want to display in our message area but return message itself is null like this statement
wdComponentAPI.getMessageManager().reportException(wdContext.nodeOutput_Salesorder_Create().currentOutput_Salesorder_CreateElement().getSalesdocument());
2.And this is when
try
               executableClazz.execute();
               nodeToinvalidate.invalidate();
          } catch (WDDynamicRFCExecuteException ree)
               wdComponentAPI.getMessageManager().reportException(ree);
                         or
wdComponentAPI.getMessageManager().reportException(ree.getMessage);
3. Message Area is simple UI element which ensure only the place where we have to so the message
So Check your code again it might solve your problem
Best Regards
Satish Kumar

Null pointer exception in native code. error 52 in Weblogic8.1

Hi all,
I'm using WLS 8.1SP5 with 1.4.2_08 and having this dump once a day, when people is working. I tryed google, but no luck. Can someone can help please?
===== BEGIN DUMP =============================================================
JRockit dump produced after 5 days, 00:39:42 on Mon Oct 01 16:59:00 2007
Additional information is available in:
D:\web\bea\user_projects\domains\APIA_Prod\jrockit.2188.dump
D:\web\bea\user_projects\domains\APIA_Prod\jrockit.2188.mdmp
If you see this dump, please open a support case with BEA and
supply as much information as you can on your system setup and
the program you were running. You can also search for solutions
to your problem at http://forums.bea.com in
the forum jrockit.developer.interest.general.
Error code: 52
Error Message: Null pointer exception in native code
Version : BEA WebLogic JRockit(TM) 1.4.2_08 JVM R24.5.0-61 ari-49095-20050826-1856-win-ia32
Threads / GC : Native Threads, GC strategy: parallel
: mmHeap->data = 0x00B60000, mmHeap->top = 0x40B60000
: mmStartCompaction = 0x1EB60000, mmEndCompaction = 0x23B60000
CPU : Intel Pentium 4 (HT)
Number CPUs : 8
Tot Phys Mem : 4025999360
OS version : Microsoft Windows Server 2003 Service Pack 1 (Build 3790)
State : JVM is shutting down
Command Line : -Djava.class.path=.;C:\Program Files\Java\j2re1.4.2_05;C:\Program Files\Java\j2re1.4.2_05\lib;C:\Program Files\Java\j2re1.4.2_05\lib\tools.jar -Djrockit.launcher.type=jrockit.shipment -Xms1024m -Xmx1024m -Xgc:parallel -Xcleartype:local -Dweblogic.management.server=http://10.128.12.23:7001 -Dbea.home=D:\web\bea -Dweblogic.RootDirectory=D:\web\bea\user_projects\domains\APIA_Prod -Djava.class.path=.;D:\web\bea\jdk142_08\lib\tools.jar;D:\web\bea\WEBLOG~1\server\lib\weblogic_sp.jar;D:\web\bea\WEBLOG~1\server\lib\weblogic.jar -Djava.security.policy==D:\web\bea\WEBLOG~1\server\lib\weblogic.policy -Dweblogic.Name=Apia_Svr1 -Dweblogic.system.BootIdentityFile=D:\web\bea\WEBLOG~1\common\nodemanager\NodeManagerLogs\NodeManagerInternal\bootFile_APIA_Prod_Apia_Svr1 -Dweblogic.system.NodeManagerBoot=true -Dweblogic.system.NodeManagerAddress=null::5555 -Dweblogic.nodemanager.ServerStartTime=1190834358456 -Dweblogic.security.SSL.ignoreHostnameVerification=false -Dweblogic.ReverseDNSAllowed=false -Dsun.java.command=weblogic.Server
Environment : JAVA_HOME=C:\Program Files\Java\j2re1.4.2_05, java.home=d:\web\bea\jrockit81sp5_142_08\jre, java.class.path=.;D:\web\bea\jdk142_08\lib\tools.jar;D:\web\bea\WEBLOG~1\server\lib\weblogic_sp.jar;D:\web\bea\WEBLOG~1\server\lib\weblogic.jar, java.library.path=d:\web\bea\jrockit81sp5_142_08\bin;.;C:\WINDOWS\system32;C:\WINDOWS;D:\web\bea\WEBLOG~1\server\bin;D:\web\bea\jdk142_08\bin;D:\web\bea\jdk142_08\jre\bin;C:\Program Files\VERITAS\NetBackup\bin\;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files\Java\j2re1.4.2_05\bin
C Heap : Good; no memory allocations have failed
Registers (from context struct at 0x41D6F488/0x41D6F5A4):
Converted EIP: 41eafe45
EAX = 00001e90 EBX = 009db42c
ECX = 003c1e90 EDX = 00000000
ESI = 71c14280 EDI = 00000000
EIP = 41eafe45 ESP = 41d6f870
EBP = 41d6f880 EFL = 00010a03
CS = 001b DS = 0023 ES = 0023
SS = 0023 FS = 003b GS = 0000
Stack:
41d6f870 :00000000 00000000 003c95a8 003c1e90 00000000 004e91e1
41d6f888 :0000008f 00000000 41d6f8c4 009db42c 00000001 00000000
41d6f8a0 :41b802e0 4cfa3940 012b5068 4d87a5cc 012b5068 00000000
41d6f8b8 :012b5068 41b81710 4ccfcdda 009b9ba8 004e9244 012b5310
41d6f8d0 :0054deca 012b5315 4ccfc945 0000008f 50a0f1e8 009db42c
41d6f8e8 :00000000 012b5258 4ccfcb33 012b5315 0000008f 012b5258
41d6f900 :4ccfca44 012b525d 00000000 009b9ba8 41d6f918 41b823f8
41d6f918 :4ccfc980 00553ff5 ffffffff 00000010 00000000 41d6f9e4
41d6f930 :4d1126e8 009b9c34 41d6fa48 41d6f978 009b9c34 437faab0
41d6f948 :fffffffe 00000002 fffffffe 00000000 41d6f978 00570b50
41d6f960 :00000000 009b9ba8 00090000 009b9c34 00000001 7c8302e7
41d6f978 :00000000 00570b50 fffffff8 00000001 0000008f 0000008c
41d6f990 :437faaf0 00000000 00000000 00000000 00000000 41d6f918
41d6f9a8 :41b823c0 ffffffff 437f9fc0 437faab0 009b9c34 4ccfc980
41d6f9c0 :0000008f 41d6f918 00000001 00000001 00000010 00000000
41d6f9d8 :00000000 41d6f918 009b9c34 009b9ba8 00533bb1 009b9c34
41d6f9f0 :50a0f1b8 4d1126e8 00000000 41d6fa44 005539c0 41d6fa48
41d6fa08 :009b9ba8 437f9fc0 41d6fa50 009b9c34 0059065c 50a0f1b8
41d6fa20 :00535583 009b9c34 437faab0 00000000 41d6fa44 005539c0
41d6fa38 :00000001 41d6fa48 00533729 41d6fa68 00000000 00000000
41d6fa50 :0000008f 00569db2 009b9c34 437f9fd4 437faab0 0000008f
41d6fa68 :009b9ba8 009b9c34 0000000f 00000002 00569ef7 0000008f
41d6fa80 :009b9ba8 0056a38d 009b9ba8 009b9ba8 41d6ff80 009b9ba8
41d6fa98 :7ffde000 009b9c34 41d6ff98 00525ca0 00572cf0 00000000
41d6fab0 :00000000 00000000 00000000 00000000 00000000 00000000
41d6fac8 :00000000 00000000 00000000 00000000 00000000 00000000
41d6fae0 :00030178 00000269 00000000 00000000 00000000 00000000
41d6faf8 :00000000 00000000 00000000 00000000 00000000 00000000
41d6fb10 :00000000 00000000 00000000 00000000 00000000 00000000
41d6fb28 :00000000 00000000 00037c28 00000000 00000000 00000000
41d6fb40 :00000000 00000013 00000000 00037c20 00030168 00000042
41d6fb58 :00037c20 00000013 00030178 00000000 00000098 00000000
41d6fb70 :00030000 009d6850 00000210 4100fbbc 00000098 4100f980
41d6fb88 :00380000 41d6f988 00000000 41d6fbd4 7c82f680 7c82fb28
41d6fba0 :ffffffff 7c82fb23 7c3423aa 771f123c 00000000 00000002
41d6fbb8 :771f0000 41d6fc10 00095e70 00000001 00000000 41d6fca8
41d6fbd0 :771f46c9 771f1240 ffffffff 771f123c 771f11e8 771f0000
41d6fbe8 :00000002 00000000 00000000 41d6fc10 00000001 41d6fc1c
41d6fc00 :7c82257a 771f0000 00000001 00000000 00000001 00000000
41d6fc18 :00097f98 00000001 00000000 41d6fcb8 7c81a81b 7c889d94
41d6fc30 :7c81b26f 00000000 7ffdc000 00000000 00000000 00000000
41d6fc48 :00000000 00000000 00000000 00000000 00000000 00000000
41d6fc60 :00000000 00000024 00000001 00000000 00000000 00000070
41d6fc78 :ffffffff ffffffff 7c81a7dc 7c81a7a4 00000000 00000000
41d6fc90 :00097f98 771f11a0 00000418 000000f5 009dc120 41d6fecc
41d6fca8 :7c82fda6 7c82fb23 0000040c 0000040c 009b9ba8 7c822054
41d6fcc0 :7c81b23f 41d6fd28 00000000 009dbad8 00000000 00000000
41d6fcd8 :00000000 00000000 00000000 00000000 00000000 00000000
41d6fcf0 :00000000 00000000 00000000 41d6fcc4 00000000 41d6fff4
41d6fd08 :7c82f680 009dc530 ffffffff 7c81b23f 7c8211b4 0000000c
41d6fd20 :41d6fd28 00000001 00010017 00000000 00000000 00380178
41d6fd38 :00000000 00000000 00000000 00000005 f7547000 0000010d
41d6fd50 :000007ff 00000001 624e4d43 00000060 ae19faa4 009dc120
41d6fd68 :e4d11360 e24e4d43 00000005 0000000e e310e008 ffffffff
41d6fd80 :3b9aca07 e33dd7e8 3b9aca07 3b9aca07 00380178 1a30eb0a
41d6fd98 :009dc538 8093d69b 009d99e8 00000000 00380178 c0000034
41d6fdb0 :808ad480 00000000 00000038 009d99f0 00000023 00000000
41d6fdc8 :00000000 009dbad8 00000000 00000000 0056f660 00000000
41d6fde0 :77e6b5f3 0000001b 00000200 41d6fffc 00000023 00000698
41d6fdf8 :0000076a e47bbbf0 00000090 00000006 00000005 f7547000
41d6fe10 :ae19fbd4 e131ec08 ae19fbd8 d3f0fe22 d3f0fe22 000000f5
41d6fe28 :8093cb16 e131ec08 e105bf1c 00000025 ae19fbd0 009d99f0
41d6fe40 :e105bfb0 ae19fbd4 8093cb6e 3b9aca07 e131ec08 8083a8f5
41d6fe58 :00000000 00000000 80a78be3 badb0d00 80010031 00000005
41d6fe70 :009dc120 00000005 c0502000 009dccd8 77ce8221 00000083
41d6fe88 :00000000 009dc118 ae19fba8 00000418 009dc118 009dc120
41d6fea0 :00380178 00000001 00000418 0000ad58 00380000 41d6fcb0
41d6feb8 :f772fa00 41d6fefc 7c82f680 7c82fb28 ffffffff 7c82fb23
41d6fed0 :7c3416b3 00380000 00000000 7c3416b8 0000040c 00000000
41d6fee8 :009b9ba8 ffffffff 41d6ff3c 41d6fee0 41d6ff40 41d6ff98
41d6ff00 :7c34240d 7c37a2a8 ffffffff 7c3416b8 7c3416db 0000040c
41d6ff18 :7c3416f8 0000040c 00000000 00504b4d 0000040c 0107e577
41d6ff30 :41d6ff6c 0057de91 009b9ba8 009b9ba8 00003000 00000140
41d6ff48 :41d6ff64 41d6ffa0 0056f1f9 41c70000 00003000 009b9ba8
41d6ff60 :009db8b0 009b9ba8 0056e9c2 7c821dd4 009b9ba8 009b9ba8
41d6ff78 :009b9ba8 00572ce9 41d6ffa0 00572ded 77e6eccd 009dbad8
41d6ff90 :009dbad8 7ffde000 41d6ffdc 00525ca0 41d6ffec 0056f6c7
41d6ffa8 :009b9ba8 00000000 00000000 00000740 009dbaf4 77e6608b
41d6ffc0 :00000740 00000000 00000000 009dbad8 c9792963 41d6ffc4
41d6ffd8 :000d4193 ffffffff 77e6b7d0 77e66098 00000000 00000000
Code:
41eafd45 :00000000 00000000 00000000 00000000 00000000 00000000
41eafd5d :00000000 00000000 ff4e4be0 00ffffff 007ffdc0 00000000
41eafd75 :34001590 0041eafd 98000000 d041eaff 0077e6b7 0077e6bb
41eafd8d :a4000000 4241eafd 2877e6ba ff000007 00ffffff 68000000
41eafda5 :0c41d6f8 280056e6 ff000007 0fffffff 48001d1a 8000aece
41eafdbd :00006093 987ffda0 c0005710 98004fe0 38009da3 0041eafe
41eafdd5 :40000000 9841eafe f8009da3 0001c83c e0000000 0001c83c
41eafded :17000000 80004f66 38006093 3841eafe 2041eafe 00f7c4ca
41eafe05 :da7ffda0 20004f20 c0f7c4ca 00004fe0 00000000 b5000000
41eafe1d :98004f2e 98009da3 00009da3 9841eaff 58009da3 00303fe0
41eafe35 :00000000 50000000 0000570b 98000000 00009da3 00000000
41eafe4d :80000000 f5006093 388083a8 5041eafe 0000570b 98000000
41eafe65 :31009da3 00800100 60000000 00005c0e 58000000 5041eafe
41eafe7d :0000570b 98000000 00009da3 00000000 d0000000 00005c0e
41eafe95 :31000000 00800100 00000000 00000000 ff000000 00ffffff
41eafead :00000000 cc000000 0080a78b e0f7757a 78adbbab 5041eafe
41eafec5 :0000570b 98000000 b7009da3 608083e6 2888736a 90005c0e
41eafedd :7888736a 5041eafe 0000570b 98000000 3c009da3 0041eaff
41eafef5 :20000000 00005c0f 80000010 f041eaff 0000572c 84000000
41eaff0d :917c8218 ff77e41a 3cffffff 4041eaff 4041eaff 64000001
41eaff25 :f041eaff 6c009de2 2d41eaff 0600540a 98000000 f0009da3
41eaff3d :00009de2 40000030 64000001 a041eaff f941eaff 000056f1
Loaded modules:
(* denotes the module causing the exception)
0x7c800000-0x7c8bffff C:\WINDOWS\system32\ntdll.dll
0x77e40000-0x77f41fff C:\WINDOWS\system32\kernel32.dll
0x77f50000-0x77febfff C:\WINDOWS\system32\ADVAPI32.dll
0x77c50000-0x77ceefff C:\WINDOWS\system32\RPCRT4.dll
0x77ba0000-0x77bf9fff C:\WINDOWS\system32\MSVCRT.dll
0x00410000-0x0061afff d:\web\bea\jrockit81sp5_142_08\jre\bin\jrockit\jvm.dll
0x76aa0000-0x76accfff C:\WINDOWS\system32\WINMM.dll
0x77c00000-0x77c47fff C:\WINDOWS\system32\GDI32.dll
0x77380000-0x77411fff C:\WINDOWS\system32\USER32.dll
0x7c8d0000-0x7d0d3fff C:\WINDOWS\system32\SHELL32.dll
0x77da0000-0x77df1fff C:\WINDOWS\system32\SHLWAPI.dll
0x71c00000-0x71c16fff C:\WINDOWS\system32\WS2_32.dll
0x71bf0000-0x71bf7fff C:\WINDOWS\system32\WS2HELP.dll
0x7c340000-0x7c395fff C:\WINDOWS\system32\MSVCR71.dll
0x71bc0000-0x71bc7fff C:\WINDOWS\system32\rdpsnd.dll
0x771f0000-0x77200fff C:\WINDOWS\system32\WINSTA.dll
0x71c40000-0x71c97fff C:\WINDOWS\system32\NETAPI32.dll
0x76b70000-0x76b7afff C:\WINDOWS\system32\PSAPI.DLL
0x77420000-0x77522fff C:\WINDOWS\WinSxS\x86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.3790.2778_x-ww_A8F04F11\comctl32.dll
0x76f50000-0x76f62fff C:\WINDOWS\system32\Secur32.dll
0x00b30000-0x00b48fff d:\web\bea\jrockit81sp5_142_08\jre\bin\java.dll
0x00b50000-0x00b5dfff d:\web\bea\jrockit81sp5_142_08\jre\bin\verify.dll
0x71b20000-0x71b60fff C:\WINDOWS\System32\mswsock.dll
0x76ed0000-0x76efefff C:\WINDOWS\system32\DNSAPI.dll
0x76f80000-0x76f87fff C:\WINDOWS\system32\rasadhlp.dll
0x42c30000-0x42c34fff D:\web\bea\weblogic81\server\bin\wlntio.dll
0x68000000-0x6802efff C:\WINDOWS\system32\rsaenh.dll
0x00a90000-0x00a95fff D:\web\bea\jrockit81sp5_142_08\jre\bin\ioser12.dll
0x02800000-0x028c0fff d:\web\bea\jrockit81sp5_142_08\jre\bin\dbghelp.dll
0x77b90000-0x77b97fff C:\WINDOWS\system32\VERSION.dll
Java Thread ID = 0x00000100, lastJavaFrame = 0x41D6F8E0, Name = (Signal Handler)
Thread Stack Trace:
at _vmShutdown+225()@0x004E91E1
at java/lang/Shutdown.halt(Native Method)@0x4CCFC910
at java/lang/Shutdown.exit(Unknown Source)@0x4CCFCA44

You would need to get BEA support, after verifying you are on a supported configuration (http://edocs.bea.com/jrockit/jrdocs/suppPlat/supp_142.html).
Otherwise you may need to try update 10, or use Sun JVM.

Help with Null Pointer Exception

Hi, I am working on a simple menu program. It compiles and works correctly except for one item. I am having a problem with Greying out a menu item...... Specifically, When I press the EDIT / OPTIONS / READONLY is supposed to Greyout the Save and SaveAs options. But, when I do that it displays a Null Pointer Exception error message in the command window.
Your advice would be much appreciated!
Now for the code
/ FileName Menutest.java
// Sample Menu
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
public class MenuTest extends JFrame {
   private Action saveAction;
     private Action saveAsAction;
     private JCheckBoxMenuItem readOnlyItem;
   // set up GUI
   public MenuTest()
      super( "Menu Test" );
//*   file menu and menu items
      // set up File menu and its menu items
      JMenu fileMenu = new JMenu( "File" );
      // set up New menu item
      JMenuItem newItem = fileMenu.add(new TestAction( "New" ));
      // set up Open menu item
      JMenuItem openItem = fileMenu.add(new TestAction( "Open" ));
          // add seperator bar
          fileMenu.addSeparator();
      // set up Save menu item
      JMenuItem saveItem = fileMenu.add(new TestAction( "Save" ));
      // set up Save As menu item
      JMenuItem saveAsItem = fileMenu.add(new TestAction( "Save As" ));
          // add seperator bar
          fileMenu.addSeparator();
          // set up Exit menu item
      JMenuItem exitItem = new JMenuItem( "Exit" );
      exitItem.setMnemonic( 'x' );
      fileMenu.add( exitItem );
      exitItem.addActionListener(
         new ActionListener() { // anonymous inner class
            // terminate application when user clicks exitItem
            public void actionPerformed( ActionEvent event )
               System.exit( 0 );
         } // end anonymous inner class
      ); // end call to addActionListener
//*   Edit menu and menu items
          // set up the Edit menu
          JMenu editMenu = new JMenu( "Edit" );
          //JMenuItem editMenu = new JMenu( "Edit" );
      // set up Cut menu item
      Action cutAction = new TestAction("Cut");
      cutAction.putValue(Action.SMALL_ICON, new ImageIcon("cut.gif"));
      // set up Copy menu item
      Action copyAction = new TestAction("Copy");
      copyAction.putValue(Action.SMALL_ICON, new ImageIcon("copy.gif") );
      // set up Paste menu item
      Action pasteAction = new TestAction("Paste");
      pasteAction.putValue(Action.SMALL_ICON, new ImageIcon("paste.gif") );
          editMenu.add(cutAction);
          editMenu.add(copyAction);
          editMenu.add(pasteAction);
      // add seperator bar
          editMenu.addSeparator();
          // set up Options menu, and it submenus and items
          JMenu optionsMenu = new JMenu("Options");
          readOnlyItem = new JCheckBoxMenuItem("Read-only");
          readOnlyItem.addActionListener(
               new ActionListener()
               { // anonymous inner class
                    public void actionPerformed( ActionEvent event)
                      saveAction.setEnabled(!readOnlyItem.isSelected());
                      saveAsAction.setEnabled(!readOnlyItem.isSelected());
            } // end anonymous inner class
          ); // end call to addActionListener
          optionsMenu.add(readOnlyItem);
          // add seperator bar
          optionsMenu.addSeparator();
          // Work on Radio Buttons
          ButtonGroup textGroup = new ButtonGroup();
          JRadioButtonMenuItem insertItem = new JRadioButtonMenuItem("Insert");
          insertItem.setSelected(true);
          JRadioButtonMenuItem overTypeItem = new JRadioButtonMenuItem("Overtype");
          textGroup.add(insertItem);
          textGroup.add(overTypeItem);
          optionsMenu.add(insertItem);
          optionsMenu.add(overTypeItem);
          editMenu.add(optionsMenu);
//*   Help menu and menu items
          // set up the Help menu
          JMenu helpMenu = new JMenu( "Help" );
          helpMenu.setMnemonic( 'H' );
      // set up index menu item
      JMenuItem indexItem = helpMenu.add(new TestAction( "Index" ));
      indexItem.setMnemonic( 'I' );
      helpMenu.add( indexItem );
          // set up About menu item
      JMenuItem aboutItem = new JMenuItem( "About" );
      aboutItem.setMnemonic( 'A' );
      helpMenu.add( aboutItem );
      aboutItem.addActionListener(
         new ActionListener() { // anonymous inner class
            // display message dialog when user selects Open
            public void actionPerformed( ActionEvent event )
               JOptionPane.showMessageDialog( MenuTest.this,
                  "This is MenuTest.java \nVersion 1.0 \nMarch 15, 2004",
                  "About", JOptionPane.PLAIN_MESSAGE );
         } // end anonymous inner class
      ); // end call to addActionListener
      // create menu bar and attach it to MenuTest window
      JMenuBar bar = new JMenuBar();
      setJMenuBar( bar );
      bar.add( fileMenu );
          bar.add( editMenu );
          bar.add( helpMenu );
      setSize( 500, 200 );
      setVisible( true );
   } // end constructor
   public static void main( String args[] )
      MenuTest application = new MenuTest();
      application.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
   // inner class to handle action events from menu items
   private class ItemHandler implements ActionListener {
      // process color and font selections
      public void actionPerformed( ActionEvent event )
       repaint();
      } // end method actionPerformed
   } // end class ItemHandler
   // Prints to action name to System.out
class TestAction extends AbstractAction
          public TestAction(String name) { super(name); }
      public void actionPerformed( ActionEvent event )
         System.out.println(getValue(Action.NAME) + " selected." );
   } // end class TestAction
} // end class MenuTest

alan, I've been trying to figure out a solution.
You can initialize it like this
private Action saveAction= new Action();
     private Action saveAsAction=new Action();
THE ABOVE WILL NOT WORK.
because Action is an interface. An interface does not have constructors. However, interface references are used for polymorphic purposes.
Anyway, all you have to do is find some class that implemets Action interface.... I cant seem to find one. Or maybe this is not how its supposed to be done?
Hopefully, someone can shed some light on this issue.
FYI,
http://java.sun.com/products/jfc/swingdoc-api-1.1/javax/swing/Action.html

Invalidate() throws null pointer exception

Hi experts,
Any idea why calling invalidate will throw a null pointer exception.
if (detailNode != null)
     detailNode.invalidate();
This is the stack trace:
java.lang.NullPointerException
     at com.sap.tc.webdynpro.progmodel.controller.MessageManager.setAttributeValidbyContext(MessageManager.java:656)
     at com.sap.tc.webdynpro.progmodel.context.NodeElement.clearPendingInput(NodeElement.java:297)
     at com.sap.tc.webdynpro.progmodel.context.NodeElement.exit(NodeElement.java:132)
     at com.sap.tc.webdynpro.progmodel.context.Node$ElementList.exit(Node.java:1859)
     at com.sap.tc.webdynpro.progmodel.context.Node.clearElements(Node.java:1560)
     at com.sap.tc.webdynpro.progmodel.context.Node.onNodeInvalidating(Node.java:1447)
     at com.sap.tc.webdynpro.progmodel.context.Node.fireNodeInvalidating(Node.java:1410)
     at com.sap.tc.webdynpro.progmodel.context.Node.clearElements(Node.java:1556)
     at com.sap.tc.webdynpro.progmodel.context.Node.onNodeInvalidating(Node.java:1447)
     at com.sap.tc.webdynpro.progmodel.context.Node.fireNodeInvalidating(Node.java:1410)
     at com.sap.tc.webdynpro.progmodel.context.Node.clearElements(Node.java:1556)
     at com.sap.tc.webdynpro.progmodel.context.Node.invalidate(Node.java:583)
     at com.sap.tc.webdynpro.progmodel.context.Node.invalidate(Node.java:580)
     at com.diagonal.mmm.component.MenuDetailsController.save(MenuDetailsController.java:281)
     at com.diagonal.mmm.component.wdp.InternalMenuDetailsController.save(InternalMenuDetailsController.java:1250)
     at com.diagonal.mmm.view.MenuDetailsView.onActionSave(MenuDetailsView.java:965)
     at com.diagonal.mmm.view.wdp.InternalMenuDetailsView.wdInvokeEventHandler(InternalMenuDetailsView.java:999)
     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:313)
     at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessingStandalone(ClientSession.java:713)
     at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessing(ClientSession.java:666)
     at com.sap.tc.webdynpro.clientserver.session.ClientSession.doProcessing(ClientSession.java:250)
     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:387)
     at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:365)
     at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:944)
     at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:266)
     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(AccessController.java:215)
     at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:100)
     at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:170)

Hello,
we are having the save Exception.
We are not working with modelNodes only with valueNodes.
We can reproduce the Exception, when doing the same as Daniel
Daniel Lam wrote:
I get the exception after doing the following:
1. The data from detailNode are displayed in a table.
2. I changed the value of one the field to an invalid text and attempt to save the application. I got a validation error.
3. I changed back to the original value and save again and i got the exception.
How did you solve it?
What are we doing wrong?`
Can somebody help me please?

Creating SC dependencies result in null pointer exception

Hi
I have installed JDI landscape and am nearly finished but I encounter a null pointer exception when I tried to adjust dependencies for my newly created SC and as a result I cannot create a track (no SCs could be added to it).
The exception is as follows:
java.lang.NullPointerException
     at com.sap.sld.wd.softwarecatalog.CreateNewDependency.supplyFilteredSoftwareComponentVersions(CreateNewDependency.java:231)
     at com.sap.sld.wd.softwarecatalog.wdp.InternalCreateNewDependency.supplyFilteredSoftwareComponentVersions(InternalCreateNewDependency.java:378)
     at com.sap.sld.wd.softwarecatalog.wdp.IPrivateCreateNewDependency$IFilteredSoftwareComponentVersionsNode.doSupplyElements(IPrivateCreateNewDependency.java:1693)
     at com.sap.tc.webdynpro.progmodel.context.Node.supplyElements(Node.java:406)
     at com.sap.tc.webdynpro.progmodel.context.Node.getElementList(Node.java:345)
     at com.sap.tc.webdynpro.progmodel.context.Node.getElements(Node.java:333)
     at com.sap.tc.webdynpro.progmodel.context.Node.size(Node.java:721)
     at com.sap.sld.wd.softwarecatalog.CreateNewDependency.onActionSort(CreateNewDependency.java:588)
     at com.sap.sld.wd.softwarecatalog.CreateNewDependency.onActionAutoSort(CreateNewDependency.java:578)
     at com.sap.sld.wd.softwarecatalog.wdp.InternalCreateNewDependency.onActionAutoSort(InternalCreateNewDependency.java:522)
     at com.sap.sld.wd.softwarecatalog.CreateNewDependency.wdDoModifyView(CreateNewDependency.java:157)
     at com.sap.sld.wd.softwarecatalog.wdp.InternalCreateNewDependency.wdDoModifyView(InternalCreateNewDependency.java:830)
     at com.sap.tc.webdynpro.progmodel.generation.DelegatingView.doModifyView(DelegatingView.java:78)
     at com.sap.tc.webdynpro.progmodel.view.View.modifyView(View.java:337)
     at com.sap.tc.webdynpro.clientserver.cal.ClientComponent.doModifyView(ClientComponent.java:481)
     at com.sap.tc.webdynpro.clientserver.cal.ClientComponent.doModifyView(ClientComponent.java:488)
     at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.doModifyView(WindowPhaseModel.java:551)
     at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.processRequest(WindowPhaseModel.java:148)
     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:299)
     at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessingStandalone(ClientSession.java:759)
     at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessing(ClientSession.java:712)
     at com.sap.tc.webdynpro.clientserver.session.ClientSession.doProcessing(ClientSession.java:261)
     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:387)
     at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:365)
     at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:944)
     at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:266)
     at com.sap.engine.services.httpserver.server.Client.handle(Client.java:95)
     at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:160)
     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:100)
     at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:170)
PLEASE help me out
Thanks

Hi,
Did you create Product/Software Components in SLD? And did you define dependencies(the three standard SAP SCs) for the SC in SLD? Did you update CMS after you've created SCs/dependencies in SLD?
Thanks,
Rajit Srinivas

Using Back button causes Null Pointer exception

Hi,
I have done some customization by extending the seeded Controller on a Page.I have altered the View query and executed it again dynamically as its not a static query.
There is a functionality called compare which directs the users to a page from the page I have customised the controller.
If the user uses the back button to return to the previous page it is giving a Null Pointer exception.
Also refresh button causes a similar Null Pointer exception on the customised controller page.
can anybody throw some light?
Also is there a way to disable the back and refresh button on the page?

Is the control entering the back button code in process request in your CO? Have you confirmed this by putting some debug comments?It many be that this error might being from the code where you have handled back button.
Put debugging comments and check.
--Mukul

Null Pointer Exception while Retrieving Records using Java API

Hi,
I am using the Class RetrieveLimitedRecords, to retrieve he records from the main table.
While using this class I am getting an error Null Pointer Exception, when there are no records matching the search criteriea.
Could anybody tell me how to ignore this error.
Thanks,
Priya.

Hi,
Thanks for the reply.
There is no any class which automatically handles, so we should handle exceptions individually.
Thanks,
Priya.

Null pointer exception handling

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