Error Handling Capture/show/upload Java.lang.nullpointerexception
and DropEventsExpandableListViewGridViewHorizontalScrollViewImageButtonImageViewLinearLayoutListViewNotificationsPasswordProgressBarProgressDialogRadioButtonRadioGroupRatingBarRelativeLayoutScrollViewSelectorSettingsSpinnerSurfaceViewTextBoxTimePickerToastToggleButtonWebViewviewMenuOnClickListenerViewPagerwidgetAutoCompleteTextViewEditTextFrameLayoutSeekBarSlidingDrawerStackViewTextViewViewFlipperxmlgamescanvasmain loopOpenGL ESCore JavaanimationapacheANTcommonsbeanutilsconvertersArrayConvertercliBasicParsercodecbinaryBase64Base64OutputStreamcsvdbcpBasicDatasourcePoolingConnectioniocomparatorCompositeFileComparatorDirectoryFileComparatorLastModifiedFileComparatorNameFileComparatorPathFileComparatorFilenameUtilsFileUtilsIOUtilsmonitorFileAlterationMonitorlang3CharUtilsClassPathUtilsmathFractionNumberUtilsStringUtilsloggingLogfactorynetCookieStoreFTPClientURLClassLoaderURLConnectionluceneappletaspectjbeanscajoCharacterclassComperablecryptoDesign PatternsdecoratorstrategyGenericsGradlegsonGsonBuilderstreamJsonReaderJsonWriterioBufferedInputStreamBufferedOutputStreamBufferedReaderBufferedWriterByteArrayInputStreamByteArrayOutputStreamConsoleDataInputStreamDataOutputStreamExternalizableFileFileDescriptorFileInputStreamFilenameFilterFileOutputStreamFileReaderFileWriterInputStreamInputStreamReaderIOExceptionObjectInputStreamObjectOutputStreamOutputStreamPrintWriterRandomAccessFileSerializableStreamTokenizerStringReaderStringWriterjsonJacksonJSON.SimplejunitlangmanagementNumberFormatExceptionProcessBuilderReferenceQueueRunnableRuntimeStringStringBufferStringBuilderSystemmathMockitonetAuthenticatorConnectExceptionCookieManagerCookieStoreDatagramPacketHttpCookieInetAddressJarURLConnectionMalformedURLExceptionMulticastSocketNetworkInterfaceServerSocket
- Life Cycle JSP - Syntax JSP - Directives JSP - Actions JSP - Implicit Objects JSP - Client Request JSP - Server Response JSP - Http Codes JSP - Form Processing JSP - Writing Filters JSP - Cookies Handling JSP - Session Tracking JSP - File Uploading JSP - Handling Date JSP - Page Redirect JSP - Hits Counter JSP - Auto Refresh JSP - Sending Email Advanced JSP Tutorials JSP - Standard Tag Library JSP - Database Access JSP - XML Data JSP - Java Beans JSP - Custom Tags JSP - Expression Language JSP - Exception https://examples.javacodegeeks.com/java-basics/exceptions/java-lang-nullpointerexception-how-to-handle-null-pointer-exception/ Handling JSP - Debugging JSP - Security JSP - Internationalization JSP Useful Resources JSP - Questions and Answers JSP - Quick Guide JSP - Useful Resources JSP - Discussion Selected Reading Developer's Best Practices Questions and Answers Effective Resume Writing HR Interview Questions Computer Glossary Who is Who JSP - Exception Handling Advertisements Previous Page Next Page When you are writing JSP code, a programmer may leave http://www.tutorialspoint.com/jsp/jsp_exception_handling.htm a coding errors which can occur at any part of the code. You can have following type of errors in your JSP code: Checked exceptions: Achecked exception is an exception that is typically a user error or a problem that cannot be foreseen by the programmer. For example, if a file is to be opened, but the file cannot be found, an exception occurs. These exceptions cannot simply be ignored at the time of compilation. Runtime exceptions: A runtime exception is an exception that occurs that probably could have been avoided by the programmer. As opposed to checked exceptions, runtime exceptions are ignored at the time of compliation. Errors: These are not exceptions at all, but problems that arise beyond the control of the user or the programmer. Errors are typically ignored in your code because you can rarely do anything about an error. For example, if a stack overflow occurs, an error will arise. They are also ignored at the time of compilation. This tutorial will give you few simple and elegant ways to handle run time exception/error occuring in your JSP code. Using Exception Object: The exception object is an instance of a subclass of Throwable (e.g., java.lang. NullPointerExcept
Changeset" when using "Diffs to..."Log In ExportXMLWordPrintableDetails Type: Bug Status: Open Priority: Medium Resolution: Unresolved Affects Version/s: 2.6.6, 3.8.0 https://jira.atlassian.com/browse/CRUC-5898 Fix Version/s: None Component/s: None Labels: bug-bucket bug-bucket-backlog fecru-delta Symptom Severity: Major Story Points: 3 Epic Link: Bug Fixer Regular Expression: java\.lang\.NullPointerException\:\sCouln\'t\sfind\sthis\srevision\swith\skey https://docs.oracle.com/cd/E23943_01/web.1111/e13734/faults.htm Sprint: 3.9-m4, 3.9-m5 Occurrence Factor: 10% - edge case or very hard to experience Development Effort: M Description I'm using Hg Mercurial 1.7.5 error handling with FishEye / Crucible 2.6.6. I've created a repository and a subrepository, and committed code into both. I've added the repositories on the instance and waited for the indexing process to complete. I've tried to create a review in the main repository (named "Mercurial"), by error handling capture/show/upload going to "Browse Changeset", and selecting "Diffs to..." in the "Add to Review as" field. When I tried to select a changeset, the following error was displayed in the UI: Error Internal Server Error Error 2 A java.lang.NullPointerException was encountered Couln't find this revision with key .hgsub@1 in repository Mercurial The same error happens on the subrepository, named "Mercurial_Subrepo": Error Internal Server Error Error 2 A java.lang.NullPointerException was encountered Couln't find this revision with key foo123.txt@1 in repository Mercurial_Subrepo This is thrown in the logs: 2011-09-09 15:22:49,089 INFO [btpool0-21 ] fisheye.app TotalityFilter-logExceptionDetails - Exception "java.lang.NullPointerException: Couln't find this revision with key foo123.txt@1 in repository Mercurial_Subrepo" (javax.servlet.ServletException) while processing "/cru/editRevisionsAjax.do" (Referer:"http://localhost:8060/cru/CR-2/edit-changelog/~author=felipe%20kraemer%20%3Cfkraemer%4040atlassian.com%3E/Mercurial_Subrepo/") javax.servlet.ServletException: java.lang.NullPointerException: Couln't find this revision with key foo123.txt@1 in repository Mercurial_Subrepo at com.opensymphony.webwork.dispatcher.DispatcherUtils.serviceAction(DispatcherUtils.java:284) at com.opensymphony.webwork.dispatcher.ServletDispatcher.service(ServletDispatcher.java:111) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511) at org.mortbay.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1272)
XML Web Services (JAX-WS). This chapter includes the following sections: Overview of Exception Handling Using SOAP Faults Contents of the SOAP Fault Element Using Modeled Faults Using Unmodeled Faults Customizing the Exception Handling Process Disabling the Stack Trace from the SOAP Fault Other Exceptions Overview of Exception Handling Using SOAP Faults When a Web service request is being processed, if an error is encountered, the nature of the error needs to be communicated to the client, or sender of the request. Because clients can be written on a variety of platforms using different languages, there must exist a standard, platform-independent mechanism for communicating the error. The SOAP specification (available at http://www.w3.org/TR/soap/) defines a standard, platform-independent way of describing the error within the SOAP message using a SOAP fault. In general, a SOAP fault is analogous to an application exception. SOAP faults are generated by receivers to report business logic errors or unexpected conditions. In JAX-WS, Java exceptions (java.lang.Exception) that are thrown by your Java Web service are mapped to a SOAP fault and returned to the client to communicate the reason for failure. SOAP faults can be one of the following types: Modeled—Maps to an exception that is thrown explicitly from the business logic of the Java code and mapped to wsdl:fault definitions in the WSDL file, when the Web service is deployed. In this case, the SOAP faults are predefined. Unmodeled—Maps to an exception (for example, java.lang.RuntimeException) that is generated at run-time when no business logic fault is defined in the WSDL. In this case, Java exceptions are represented as generic SOAP fault exceptions, javax.xml.ws.soap.SOAPFaultException. The faults are returned to the sender only if request/response