Please, before pointing that this is duplicate of What is a NullPointerException, and how do I fix it?, read the post to the end, as this is prepared as adviced on the mentioned site!
I moved my app from Wildfly 8 to Wildfly 10 and to my suprise I've got NullPointerException in place of where in my opinion it shouldn't be.
Piece of code of AdmUserCrud.java - update() method:
119: inst.setRoles(roles);
120: if (inst.getAllowIp()!=null && inst.getAllowIp().equals(""))
121: inst.setAllowIp(null);
Error:
Caused by: java.lang.NullPointerException
at com.i4u.qla.action.setting.AdmUserCrud.update(AdmUserCrud.java:120)
at com.i4u.qla.action.setting.AdmUserCrud$Proxy$_$$_WeldSubclass.update$$super(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.jboss.weld.interceptor.proxy.TerminalAroundInvokeInvocationContext.proceedInternal(TerminalAroundInvokeInvocationContext.java:49)
at org.jboss.weld.interceptor.proxy.AroundInvokeInvocationContext.proceed(AroundInvokeInvocationContext.java:77)
at com.arjuna.ats.jta.cdi.transactional.TransactionalInterceptorBase.invokeInOurTx(TransactionalInterceptorBase.java:117)
at com.arjuna.ats.jta.cdi.transactional.TransactionalInterceptorRequired.doIntercept(TransactionalInterceptorRequired.java:53)
at com.arjuna.ats.jta.cdi.transactional.TransactionalInterceptorBase.intercept(TransactionalInterceptorBase.java:76)
at com.arjuna.ats.jta.cdi.transactional.TransactionalInterceptorRequired.intercept(TransactionalInterceptorRequired.java:47)
at sun.reflect.GeneratedMethodAccessor125.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.jboss.weld.interceptor.reader.SimpleInterceptorInvocation$SimpleMethodInvocation.invoke(SimpleInterceptorInvocation.java:74)
at org.jboss.weld.interceptor.proxy.InterceptorMethodHandler.executeAroundInvoke(InterceptorMethodHandler.java:84)
at org.jboss.weld.interceptor.proxy.InterceptorMethodHandler.executeInterception(InterceptorMethodHandler.java:72)
at org.jboss.weld.interceptor.proxy.InterceptorMethodHandler.invoke(InterceptorMethodHandler.java:56)
at org.jboss.weld.bean.proxy.CombinedInterceptorAndDecoratorStackMethodHandler.invoke(CombinedInterceptorAndDecoratorStackMethodHandler.java:79)
at org.jboss.weld.bean.proxy.CombinedInterceptorAndDecoratorStackMethodHandler.invoke(CombinedInterceptorAndDecoratorStackMethodHandler.java:68)
at com.i4u.qla.action.setting.AdmUserCrud$Proxy$_$$_WeldSubclass.update(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at javax.el.ELUtil.invokeMethod(ELUtil.java:300)
at javax.el.BeanELResolver.invoke(BeanELResolver.java:415)
at javax.el.CompositeELResolver.invoke(CompositeELResolver.java:256)
at com.sun.el.parser.AstValue.invoke(AstValue.java:285)
at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:304)
at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:40)
at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:50)
at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:40)
at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:50)
at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
... 59 more
Line 119 (and not visible lines above) assures that inst object is not null. So why line 120 raises the NullPointer error?
I'm really confused.
It might be the case that the inst.getAllowIp() returns different results on subsequent calls. So when it does first part of the if:
(inst.getAllowIp()!=null && ...
it might result some value, and a while later...
.. && inst.getAllowIp().equals("") )
might already be a null.
One way to prevent that (although it might not be exactly what you need) is to get the value only once, e.g. something along the lines of
inst.setRoles(roles);
String currentIp = inst.getAllowIp();
if (currentIp!=null && currentIp.equals(""))
...
In general I don't think it has any direct connection to Wildfly version changing.
Related
I have recently started getting following exception, only when junits are being run. In normal flow, the method runs fine. (In fact even the jUnits used to work fine till some time back)
java.lang.NoSuchMethodException:
io.jsonwebtoken.impl.crypto.MacProvider.generateKey(io.jsonwebtoken.SignatureAlgorithm)
Following is the method:
public static String generateDummyJWT(String userName)
{
return Jwts.builder().claim("user_name", StringUtils.defaultString(userName)).setAudience("client1").signWith(Keys.secretKeyFor(SignatureAlgorithm.HS384)).compact();
}
And jjwt versions:
Following is the complete stack trace:
Caused by: java.lang.IllegalStateException: Unable to invoke class
method io.jsonwebtoken.impl.crypto.MacProvider#generateKey. Ensure
the necessary implementation is in the runtime classpath. at
io.jsonwebtoken.lang.Classes.invokeStatic(Classes.java:202) at
io.jsonwebtoken.security.Keys.secretKeyFor(Keys.java:121) at
com.random.util.ServiceSpecificUtil.generateDummyJWT(ServiceSpecificUtil.java:143)
at
com.random.util.ServiceConstants.(ServiceConstants.java:203)
at com.random.MyClass.isUserBranch(MyClass.java:67) at
com.random.MyClass.validName(MyClass.java:93) at
com.random.MyClass.preConditionCheck(MyClass.java:82) at
com.random.MyClass.get(MyClass.java:46) at
com.random.MyClass2.evaluateExpression(MyClass2.java:218) at
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498) at
org.powermock.api.mockito.internal.invocation.MockitoMethodInvocationControl$1.invoke(MockitoMethodInvocationControl.java:243)
at
org.mockito.internal.invocation.realmethod.CleanTraceRealMethod.invoke(CleanTraceRealMethod.java:30)
at
org.mockito.internal.invocation.InvocationImpl.callRealMethod(InvocationImpl.java:112)
at
org.mockito.internal.stubbing.answers.CallsRealMethods.answer(CallsRealMethods.java:41)
at
org.mockito.internal.handler.MockHandlerImpl.handle(MockHandlerImpl.java:93)
at
org.powermock.api.mockito.internal.invocation.MockitoMethodInvocationControl.performIntercept(MockitoMethodInvocationControl.java:266)
at
org.powermock.api.mockito.internal.invocation.MockitoMethodInvocationControl.invoke(MockitoMethodInvocationControl.java:192)
at org.powermock.core.MockGateway.doMethodCall(MockGateway.java:132)
at org.powermock.core.MockGateway.methodCall(MockGateway.java:63) at
com.random.MyClass2.evaluateExpression(MyClass2.java) at
com.random.MyClass2.isPermitted(MyClass2.java:107) at
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498) at
org.powermock.api.mockito.internal.invocation.MockitoMethodInvocationControl$1.invoke(MockitoMethodInvocationControl.java:243)
at
org.mockito.internal.invocation.realmethod.CleanTraceRealMethod.invoke(CleanTraceRealMethod.java:30)
at
org.mockito.internal.invocation.InvocationImpl.callRealMethod(InvocationImpl.java:112)
at
org.mockito.internal.stubbing.answers.CallsRealMethods.answer(CallsRealMethods.java:41)
at
org.mockito.internal.handler.MockHandlerImpl.handle(MockHandlerImpl.java:93)
at
org.powermock.api.mockito.internal.invocation.MockitoMethodInvocationControl.performIntercept(MockitoMethodInvocationControl.java:266)
at
org.powermock.api.mockito.internal.invocation.MockitoMethodInvocationControl.invoke(MockitoMethodInvocationControl.java:192)
... 32 more Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498) at
io.jsonwebtoken.lang.Classes.invokeStatic(Classes.java:198) ... 66
more Caused by: java.lang.IllegalStateException: The HmacSHA384
algorithm is not available. This should never happen on JDK 7 or
later - please report this to the JJWT developers. at
io.jsonwebtoken.impl.crypto.MacProvider.generateKey(MacProvider.java:94)
at
io.jsonwebtoken.impl.crypto.MacProvider.generateKey(MacProvider.java:63)
... 71 more Caused by: java.security.NoSuchAlgorithmException:
HmacSHA384 KeyGenerator not available at
javax.crypto.KeyGenerator.(KeyGenerator.java:169) at
javax.crypto.KeyGenerator.getInstance(KeyGenerator.java:223) at
io.jsonwebtoken.impl.crypto.MacProvider.generateKey(MacProvider.java:92)
... 72 more
I was able to resolve my problem.
Someone in the team had added the call to above function while initializing a static final variable like this:
public static String TOKEN_GUEST = ServiceSpecificUtil.generateDummyJWT(USERNAME);
Now, it seems that access to the java.security packges generally does not work well with PowerMock due to heavy use of reflections & byte code manipulations:
Although I had referred this SO post and tried the suggested solution of using
#PowerMockIgnore like:
#PowerMockIgnore({"org.apache.http.conn.ssl.*", "javax.net.ssl.*" , "javax.crypto.*"})
and that might be helpful in preventing errors when above function was called from another function. But it was not preventing errors in static variable initialization.
public static String TOKEN_GUEST = ServiceSpecificUtil.generateDummyJWT(USERNAME);
I will update this post when I dig deeper as to why the error was coming only in case of static variable initialization and not when ServiceSpecificUtil.generateDummyJWT(USERNAME) was being called from another function.
I made a plugin and throughout development I have had some troubles with scoreboard. This time I really hit a wall whereas I don't know how I'm going to solve this on my own. I need some help.
I can steer you in the right direction though. After looking at the Error message and changing my code a little I figured out that the problem lies in the way that I reset score (in method SetScoreBoard() Line 726).
My code: https://pastebin.com/M5kFr2Lr (Read the pastebin)
public void SetScoreBoard(Player p) {
scoreboard = boardMap.get(p.getUniqueId());
scoreboard.resetScores(score15.get(p.getUniqueId()));
scoreboard.resetScores(score14.get(p.getUniqueId()));
scoreboard.resetScores(score13.get(p.getUniqueId()));
scoreboard.resetScores(score12.get(p.getUniqueId()));
scoreboard.resetScores(score11.get(p.getUniqueId()));
scoreboard.resetScores(score10.get(p.getUniqueId()));
scoreboard.resetScores(score9.get(p.getUniqueId()));
scoreboard.resetScores(score8.get(p.getUniqueId()));
scoreboard.resetScores(score7.get(p.getUniqueId()));
scoreboard.resetScores(score6.get(p.getUniqueId()));
scoreboard.resetScores(score5.get(p.getUniqueId()));
scoreboard.resetScores(score4.get(p.getUniqueId()));
scoreboard.resetScores(score3.get(p.getUniqueId()));
scoreboard.resetScores(score2.get(p.getUniqueId()));
scoreboard.resetScores(score1.get(p.getUniqueId()));
boardMap.put(p.getUniqueId(), scoreboard);
updateScoreBoard(p);
}
The error:
Caused by: java.lang.NullPointerException
at pillars.EssemCSH.main.Main.SetScoreBoard(Main.java:729) ~[?:?]
at pillars.EssemCSH.main.Main.onPlayerLeave(Main.java:1046) ~[?:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_161]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_161]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_161]
at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_161]
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
... 12 more
While I was testing the eclipse JDT package, this following code caused a Null Pointer Exception.
parse.findDeclaringNode(method.resolveMethodBinding()).getClass();
The strange thing is the following code,
System.out.println("Binding start: " + parse.findDeclaringNode(method.resolveMethodBinding()));
prints the following:
Binding start: public static int test(){
return 1;
}
So clearly, what's returned from parse.findDeclaringNode(method.resolveMethodBinding()) is not null.
However, despite printing something, adding toString() as below also gives a Null Pointer Exception, which suggests that the printing didn't even happen via "toString()":
parse.findDeclaringNode(method.resolveMethodBinding()).toString();
Before I explain what the code is expected to do, here is the console output of the exception from running "parse.findDeclaringNode(method.resolveMethodBinding()).getClass();" :
!ENTRY org.eclipse.ui 4 0 2018-01-23 20:46:17.150
!MESSAGE Unhandled event loop exception
!STACK 0
org.eclipse.e4.core.di.InjectionException: java.lang.NullPointerException
at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:65)
at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:305)
at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:239)
at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:132)
at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:152)
at org.eclipse.core.commands.Command.executeWithChecks(Command.java:494)
at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:487)
at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:210)
at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.executeItem(HandledContributionItem.java:431)
at org.eclipse.e4.ui.workbench.renderers.swt.AbstractContributionItem.handleWidgetSelection(AbstractContributionItem.java:446)
at org.eclipse.e4.ui.workbench.renderers.swt.AbstractContributionItem.lambda$2(AbstractContributionItem.java:472)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:86)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4428)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1079)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4238)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3817)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1150)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1039)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153)
at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:680)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:594)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:151)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:653)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590)
at org.eclipse.equinox.launcher.Main.run(Main.java:1499)
at org.eclipse.equinox.launcher.Main.main(Main.java:1472)
Caused by: java.lang.NullPointerException
at de.vogella.jdt.astsimple.handlers.SampleHandler.createAST(SampleHandler.java:89)
at de.vogella.jdt.astsimple.handlers.SampleHandler.analyseMethods(SampleHandler.java:52)
at de.vogella.jdt.astsimple.handlers.SampleHandler.execute(SampleHandler.java:37)
at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:291)
at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:92)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:55)
... 37 more
Let me explain what parse.findDeclaringNode(method.resolveMethodBinding())) is.
"parse" is a CompilationUnit and "method" is a MethodInvocation. parse.findDeclaringNode(method.resolveMethodBinding()) should return an ASTNode. Eclipse recognizes this and so if I type that line and add a period at the end, it suggests me methods of ASTNode.
Moreover, typing System.out.println(parse.findDeclaringNode(method.resolveMethodBinding()) instanceof String); makes Eclipse complain Incompatible conditional operand types ASTNode and String. Hence, even the imported package suggests that ASTNode should be returned.
However, System.out.println(parse.findDeclaringNode(method.resolveMethodBinding()) instanceof ASTNode); prints false.
I have no idea what parse.findDeclaringNode(method.resolveMethodBinding()) is actually returning then.
===========UPDATE===============
Strange thing happened when I did ASTNode test = parse.findDeclaringNode(method.resolveMethodBinding());. The Eclipse debugger shows "test" to be null and even testing with test == null returns true.
So apparently parse.findDeclaringNode(method.resolveMethodBinding()) returns something that can be printed but when assigned as an ASTNode object it becomes null.
This question already has answers here:
java.lang.UnsupportedOperationException for removing a row from the javafx tableview
(2 answers)
Why SortedList.add() throws UnsupportedOperationException?
(1 answer)
Closed 5 years ago.
I'm working in javafx. I have a Listview which is updated by an ObservableList.
Here is my code.
//Dummy list for testing listview
final ObservableList<String> names = FXCollections.observableArrayList(
"Julia", "Ian", "Sue", "Matthew", "Hannah", "Stephan", "Denise");
final ListView<String> listView = new ListView(names.sorted());
//Try to remove the first element for testing purposes
listView.getItems().remove(0);
When I try to delete I get this exception.
Exception in Application start method
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:389)
at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:767)
Caused by: java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$155(LauncherImpl.java:182)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.UnsupportedOperationException
at java.util.AbstractList.remove(AbstractList.java:161)
at sample.Main.start(Main.java:39)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$162(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$175(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null$173(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$174(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191)
... 1 more
Exception running application sample.Main
Is there some step that I'm missing in this case? Or am I trying to use ObservableList and ListView in the wrong way?
You are using javafx.collections.transformation.SortedList<E> in an incorrect way.
It's only a wrapper, a view.
To remove an element, you have to use the source collection: names.
javafx.collections.transformation.SortedList<E> doesn't implements remove() but:
Wraps an ObservableList and sorts it's content. All changes in the
ObservableList are propagated immediately to the SortedList. Note:
invalid SortedList (as a result of broken comparison) doesn't send any
notification to listeners on becoming valid again.
JavaDoc of javafx.collections.transformation.SortedList
This tutorial may help.
I am getting a NullPointerException as shown below.
However, the debugger is not able to bring it up when enabled in this method, the code is getting invoked with reflections. Can you please provide me ideas\techniques to be able to debug this code?
[10/18/16 18:20:47:933 EST] 00000051 DWLExceptionU E java.lang.NullPointerException
at com.dwl.base.notification.NotificationManager$NotificationChannel.notify(NotificationManager.java:662)
at com.dwl.base.notification.NotificationManager$NotificationType.notify(NotificationManager.java:402)
at com.dwl.base.notification.NotificationManager.notify(NotificationManager.java:1454)
at com.dwl.base.notification.bean.impl.NotificationBean.notify(NotificationBean.java:142)
at com.dwl.base.notification.EJSLocalCSLNotification_e2801c59.notify(EJSLocalCSLNotification_e2801c59.java)
at com.dwl.base.notification.EJSProxy$$NotificationLocal.notify(Unknown Source)
at au.com.xxxxx.mdm.notification.NotificationHelper.sendNotification(NotificationHelper.java:75)
at au.com.xxxxxx.mdm.behaviour.SingleCustomerViewId.triggerNotification(SingleCustomerViewId.java:159)
at au.com.xxxxxxx.mdm.behaviour.SingleCustomerViewId.execute(SingleCustomerViewId.java:129)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:88)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:55)
at java.lang.reflect.Method.invoke(Method.java:613)
at com.dwl.base.extensionFramework.JavaExtensionSet.invoke(JavaExtensionSet.java:159)
at com.dwl.base.extensionFramework.ExtensionHandler.executeExtension(ExtensionHandler.java:251)
at com.dwl.base.DWLCommonComponent.handleExtensions(DWLCommonComponent.java:1380)
at com.dwl.base.DWLCommonComponent.postExecute(DWLCommonComponent.java:509)
at com.dwl.tcrm.common.TCRMCommonComponent.postExecute(TCRMCommonComponent.java:263)
at com.dwl.tcrm.coreParty.component.TCRMPersonComponent.addPerson(TCRMPersonComponent.java:1641)
at com.dwl.tcrm.coreParty.component.TCRMPartyComponent.addPerson(TCRMPartyComponent.java:3079)
at com.dwl.tcrm.coreParty.component.TCRMPartyComponent.addPartySimple(TCRMPartyComponent.java:2813)
at com.dwl.tcrm.coreParty.component.TCRMPartyComponent.addParty(TCRMPartyComponent.java:2471)
at com.dwl.tcrm.coreParty.controller.TCRMCorePartyTxnBean.addPerson(TCRMCorePartyTxnBean.java:1764)
at Proxy5aa32899_c04f_46c5_9706_69af241cd3c4.addPerson(Unknown Source)
at Proxy5aa32899_c04f_46c5_9706_69af241cd3c4.addPerson(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:88)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:55)
at java.lang.reflect.Method.invoke(Method.java:613)
at com.dwl.base.requestHandler.DWLTxnBP.processPersistentObject(DWLTxnBP.java:262)
at com.dwl.base.requestHandler.DWLTxnBP.execute(DWLTxnBP.java:115)
at com.dwl.base.requestHandler.DWLTxnProcessor.processTx(DWLTxnProcessor.java:98)
at com.dwl.unifi.tx.manager.CTxRxFacade.processTxNormal(CTxRxFacade.java:681)
at com.dwl.unifi.tx.manager.CTxRxFacade.processTx(CTxRxFacade.java:544)
at com.dwl.base.requestHandler.DWLRequestHandler.processTransaction(DWLRequestHandler.java:1187)
at com.dwl.base.requestHandler.DWLRequestHandler.processTx(DWLRequestHandler.java:591)
at com.dwl.base.requestHandler.DWLServiceControllerBase.processRequest(DWLServiceControllerBase.java:253)
at com.dwl.base.requestHandler.beans.EJSRemoteCSLDWLServiceController_2c54996d.processRequest(EJSRemoteCSLDWLServiceController_2c54996d.java)
at com.dwl.base.requestHandler.beans._EJSRemoteCSLDWLServiceController_2c54996d_Tie.processRequest(_EJSRemoteCSLDWLServiceController_2c54996d_Tie.java:1)
at com.dwl.base.requestHandler.beans._EJSRemoteCSLDWLServiceController_2c54996d_Tie._invoke(_EJSRemoteCSLDWLServiceController_2c54996d_Tie.java)
at com.ibm.CORBA.iiop.ServerDelegate.dispatchInvokeHandler(ServerDelegate.java:669)
at com.ibm.CORBA.iiop.ServerDelegate.dispatch(ServerDelegate.java:523)
at com.ibm.rmi.iiop.ORB.process(ORB.java:523)
at com.ibm.CORBA.iiop.ORB.process(ORB.java:1575)
at com.ibm.rmi.iiop.Connection.doRequestWork(Connection.java:3039)
at com.ibm.rmi.iiop.Connection.doWork(Connection.java:2922)
at com.ibm.rmi.iiop.WorkUnitImpl.doWork(WorkUnitImpl.java:64)
at com.ibm.ejs.oa.pool.PooledThread.run(ThreadPool.java:118)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1892)
Can you please provide me ideas\techniques to be able to debug this code?
Since you said the method is called from reflection, you can see that in the stacktrace.
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:88)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:55)
at java.lang.reflect.Method.invoke(Method.java:613)
So, keep reading up from that.
I'm guessing you intentionally edited the xxxx values, so these are your libraries that are being dynamically called.
at au.com.xxxxx.mdm.notification.NotificationHelper.sendNotification(NotificationHelper.java:75)
at au.com.xxxxxx.mdm.behaviour.SingleCustomerViewId.triggerNotification(SingleCustomerViewId.java:159)
at au.com.xxxxxxx.mdm.behaviour.SingleCustomerViewId.execute(SingleCustomerViewId.java:129)
Then, the rest of the call stack just goes through some other code library within the same package.
at com.dwl.base.notification.NotificationManager$NotificationChannel.notify(NotificationManager.java:662)
at com.dwl.base.notification.NotificationManager$NotificationType.notify(NotificationManager.java:402)
at com.dwl.base.notification.NotificationManager.notify(NotificationManager.java:1454)
at com.dwl.base.notification.bean.impl.NotificationBean.notify(NotificationBean.java:142)
at com.dwl.base.notification.EJSLocalCSLNotification_e2801c59.notify(EJSLocalCSLNotification_e2801c59.java)
at com.dwl.base.notification.EJSProxy$$NotificationLocal.notify(Unknown Source)
So, the problem definitely starts at NotificationHelper.sendNotification(NotificationHelper.java:75), but it cannot easily be determined the path that the code took in order to reach its eventual destination or what exactly caused the exception without inspecting the source of (NotificationManager.java:662)