I would suggest you crack open the debugger, and debug the code that throws NPE. Even if it's inside Tapestry, it'll shine the light on what's causing it in your code. You will learn the mistake immediately, and learn something new in the process.
On Aug 13, 2013, at 3:45 PM, rukmini n wrote: > Hi Thiago.. > > I tried, what you suggested.. But I got the exception. Please help.. > > > Caused by: org.apache.tapestry5.ioc.internal.util.TapestryException [at > classpath:com/test/ui/components/sh/common/LoginComponent.tml, line 44] > at > org.apache.tapestry5.internal.structure.ComponentPageElementImpl$AbstractPhase.invoke(ComponentPageElementImpl.java:194) > at > org.apache.tapestry5.internal.structure.ComponentPageElementImpl$AfterRenderBodyPhase.render(ComponentPageElementImpl.java:371) > at > org.apache.tapestry5.internal.services.RenderQueueImpl.run(RenderQueueImpl.java:72) > ... 110 more > Caused by: java.lang.NullPointerException > at org.apache.tapestry5.dom.Node.moveBefore(Node.java:106) > at org.apache.tapestry5.dom.Element.pop(Element.java:657) > at > com.test.ui.components.sh.common.FieldValidationErrorMsg.afterRenderBody(FieldValidationErrorMsg.java:104) > at > com.test.ui.components.sh.common.FieldValidationErrorMsg$MethodAccess_afterRenderBody_1407932bda2.invoke(FieldValidationErrorMsg$MethodAccess_afterRenderBody_1407932bda2.java) > at > org.apache.tapestry5.internal.transform.RenderPhaseMethodWorker$Invoker.invoke(RenderPhaseMethodWorker.java:117) > at > org.apache.tapestry5.internal.transform.RenderPhaseMethodWorker$RenderPhaseMethodAdvice.advise(RenderPhaseMethodWorker.java:86) > at > org.apache.tapestry5.internal.services.AbstractComponentMethodInvocation.proceed(AbstractComponentMethodInvocation.java:86) > at > com.test.ui.components.sh.common.FieldValidationErrorMsg.afterRenderBody(FieldValidationErrorMsg.java) > at > org.apache.tapestry5.internal.structure.ComponentPageElementImpl$AfterRenderBodyPhase.invokeComponent(ComponentPageElementImpl.java:364) > at > org.apache.tapestry5.internal.structure.ComponentPageElementImpl$AbstractPhase.invoke(ComponentPageElementImpl.java:176) > ... 112 more > > > Thanks, > Rukmini > > On Tue, Aug 13, 2013 at 12:18 PM, Thiago H de Paula Figueiredo < > thiag...@gmail.com> wrote: > >> On Tue, 13 Aug 2013 15:04:54 -0300, rukmini n <rukmini...@gmail.com> >> wrote: >> >> Hi Thiago, >>> >> >> Hi! >> >> I think the problem is here: >> >> msgEle.removeChildren(); >>> msgEle.pop(); >>> >> >> Have you tried just using msgEle.remove(), as you seem to want to remove >> the element completely? >> >> >> -- >> Thiago H. de Paula Figueiredo >> >> ------------------------------**------------------------------**--------- >> To unsubscribe, e-mail: >> users-unsubscribe@tapestry.**apache.org<users-unsubscr...@tapestry.apache.org> >> For additional commands, e-mail: users-h...@tapestry.apache.org >> >> --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
