java lang nullpointerexception java

During RCP Eclipse plug-in development, the following error is always reported when the management software interface is started: ! Entry org. Eclipse. UI. workbench 4 0 18:44:21. 306! Message warning: prevented recursive attempt to activate part Org. gluster. storage. management. console. views. clustersummaryview while still in the middle of activating part Org. gluster. storage. management. console. views. navigationview! Stack 0Java. lang. runtim

Deployment exception Java. Lang. noclassdeffounderror: anlr/antlrexceptionOrg. hibernate. hql. Ast. astquerytranslatorfactory. createquerytranslator (astquerytranslatorfactory. Java: 35)Org. hibernate. Engine. query. hqlqueryplan. Org. hibernate. Engine. query. hqlqueryplan. Org. hibernate. Engine. query. queryplancache. gethqlqueryplan (queryplancache.

12-19 12:12:42. 701: E/androidruntime (626): Java. lang. runtimeexception: unable to start activity componentinfo {COM. CLM. activity/COM. CLM. activity. registactivity}: Java. lang. nullpointerexception 12-19 12:12:42. 701: E/androidruntime (626 ):At com. CLM. activity.

Error cause returned when one Actiivty enters another Actiivty: because the target Activity's permission is not changed to publicclass *** ActivityFATALEXCEPTION: mainjava. lang. RuntimeException: UnabletoinstantiateactivityComponentInfo {com. duguang Error cause returned when one Actiivty enters another Actiivty: because the target Activity has the permission not to change public class *** Activity to public class *** Activity fatal exception: main

May 30 1:11:13 Org. apache. catalina. core. serious standardwrappervalve invoke: servlet. service () for servlet [action] in context with path [/blog_system_06] threw exception [beanutils. populate] with root causejava. lang. illegalargumentexception: argument type mismatchat sun. reflect. nativemethodaccessorimpl. invoke0 (native method) at Sun. reflect. nativemethodaccessorimpl. invoke (nativemethodaccessorimpl.

Severe: exception starting filter struts2Java. Lang. noclassdeffounderror: COM/opensymphony/xwork2/config/filemanagerproviderAt org. Apache. struts2.dispatcher. Dispatcher. init_filemanager (dispatcher. Java: 336)At org. Apache. struts2.dispatcher. Dispatcher. INIT (dispatcher. Java: 463)At org. Apache. struts2.dispatcher. Ng. initoperations. initdispatcher (init

Recently running hadoopProgram, Encountered two problems: 1. outofmemoryerror in hadoop Error: Unable to create new Native thread error initializing attempt_2011100000003_0013_r_000000_0: Java. lang. outofmemoryerror: Unable to create new Native thread at java. lang. thread. start0 (native method) at

Solve java. lang. IllegalStateException: BeanFactory not initialized or already closed, I encountered this problem when I was running someone else's SSH project today. Severe: Exception sending context initialized event to listener instance of class org. springframework. web. context. contextLoaderListenerorg. springframework. beans. factory. beanDefinitionStoreException: Failed to read candidate component

Configure the following dependencies in Maven: Run in resin-3.0.28 and report the following error: Servlet. Service () for servlet JSP threw exceptionJava. Lang. noclassdeffounderror: javax/El/elexception The reason is that the container does not support jstl1.2, just replace it with the following dependencies: The same problem also exists in Tomcat. Tomcat6 jsp2.1/servlet2.5/jstl2.0 Tomcat5 jsp2.0/servlet2.4/jstl1.1 Tomcat4 jsp1.2/servlet2.3/jstl1

For details about java. lang. UnsupportedClassVersionError -- Linux general technology-Linux programming and kernel, refer to the following. Run a simple Servlet under Fedora 8 and the following error occurs: CODE: type Exception reportMessageDescription The server encountered an internal error () that prevented it from fulfilling this request.ExceptionJavax. servlet. ServletException: Error

Errors in using commons-io-2.5 in Tomcat java. lang. ClassNotFoundException: org. apache. commons. io. IOUtils, Keywords: IntelliJ IDEA, Tomcat, commons-io-2.5.jar, java. lang. ClassNotFoundException: org. apache. commons. io. IOUtils 1. error message Figure 1 error message during logon // Tomcat Localhost Log informa

Exception Handling series: java. lang. OutOfMemoryError: PermGen space, permgen Today, I helped my colleagues solve the problem of Tomcat startup and reported an OutOfMemoryError. Then I searched and found it very interesting. The solution is as follows: The memory is full. So we need to increase the Tomcat memory pool a little. Modify as follows:1. window --> Preferences, and then write "tomcat" directly

Java. lang. IncompatibleClassChangeError: Implementing class solution. After a day, the solution is finally solved. implementingclass I. background After git updates the code and restarts the server, the problem is inexplicably generated. When I read the error message, I basically couldn't understand it, and then I checked it in hundreds of times, it basically said that the jar package conflicts, so point t

[Java]07:16:33, 911 ERROR CharsetEncoding: 38-java. lang. ClassCastException: org. apache. catalina. util. DefaultAnnotationProcessorOrg. apache. jasper. JasperException: java. lang. ClassCastException: org. apache. catalina. util. DefaultAnnotationProcessorAt org. apache. j

Test Tomcat comet Java. Lang. nosuchmethodexception: org. Apache. Catalina. Deploy. webxml addservlet exception Because the project uses Tomcat's Catalina. jar and is deployed to Tomcat, this package is also deployed, and an exception is reported during deployment. 2012-7-27 11:44:05 org. Apache. Catalina. startup. contextconfig parsewebxmlSevere: Parse error in Application Web. xml file at JNDI:/localhos

Package java. Lang;Import java. Io .*; /**** Throwable is the parent class of all errors and exceptiong.* Note that there are four constructors:* Throwable ()* Throwable (string message)* Throwable (throwable cause)* Throwable (string message, throwable cause)** Comment by liqiang**/Public class throwable implements serializable {Private Static final long serialv

Author: Source: Java Research Organization I. InterfaceJava. Lang. appendable Append Interface. The object instance of the class that implements this interface has the ability to append characters or character sequences to it. Classes that want to receive formatter output must implement this interface.Java. Lang. charsequenceCharsequence refers to the readable c

Spring version 2.5.5 and JUnit version 4.8.1 use Spring TestContext's SpringJUnit4ClassRunner. This version of JUnit has been used for a long time, and no error will be thrown when writing a simple test. The following error is thrown when you try to write the standard JUnit test code today: Java. lang. NoClassDefFoundError: org/junit/Assume $ AssumptionViolatedExceptionAt org. springframework. test. context

05-12 18:51:14. 676: E/androidruntime (22729): Java. Lang. illegalstateexception: Database not open05-12 18:51:14. 676: E/androidruntime (22729): at Android. database. SQLite. sqlitedatabase. insertwithonconflict (sqlitedatabase. Java: 1526)05-12 18:51:14. 676: E/androidruntime (22729): At com. ailk. DB. netdb. addnetappflow (netdb.

Java. Lang. Object This class object is the root of all other class object extension hierarchy trees on the Java platform. All other classes extend the class either directly or indirectly. This class provides the default object operation method: Clone () Returns a duplicate of the object. Equals () Compare whether the object is "equal" to the specified object. Th