java lang classcastexception

Exception: Org. Apache. commons. beanutils. conversionexception: cannot assign value of Type 'java. Lang. string' to property 'file' of Type 'org. Apache. Struts. Upload. formfile'At org. Apache. Struts. Action. dynaactionform. Set (dynaactionform. Java: 423)At org. Apache. commons. beanutils. propertyutils. setsimpleproperty (propertyutils.

I encountered a problem when I learned to parse XML using XPath technology today: Exception in thread "Main" Java. Lang. noclassdeffounderror: ORG/jaxen/basexpathAt java. Lang. Class. forname0 (native method)At java. Lang. Class.

Java. lang. UnsatisfiedLinkError: Unable to load library 'xxx': Native library (win32-x86-64/ID_Fpr.dll), missing nativelibrary When JNA is used to call the dll library, the following error occurs because the dll library is 32-bit while the jvm is 64-bit: Java. lang. UnsatisfiedLinkError: Unable to load library 'xxx':

Struts2 java. lang. StackOverflowError org. apache. struts2.json. JSONWriter, struts2printwriter 1. Problem description: The page accesses action asynchronously. The action method encapsulates data through map. The struts result type is set to json, and an error is reported in the background. June 25 6:54:33 org. apache. catalina. core. standardWrapperValve invokeSEVERE: Servlet. service () for servlet [def

This error occurs during the first running! Exception Javax. servlet. ServletException: Servlet execution threw an exception Root cause Java. lang. ExceptionInInitializerErrorClassmate. HibernateUtil. Classmate. DbOperate. getUser (DbOperate. java: 25)Classmate.LoginAction.exe cute (LoginAction. java: 27)Org. apache.

Tomcat cannot be started. The following error occurs: Java. Lang. noclassdeffounderror: ORG/Apache/Juli/logging/logfactory. 15:58:46 | category: Tomcat | label: Juli Java Lang Apache org | font size subscription Some time ago, I saw several beta versions of tomcat7.0 released. I didn't test it because it was not stable

String. replaceall and Java. Lang. illegalargumentexception0. application scenarios (non-real applications, designed by the author)During currency conversion, the unit of currency must be replaced according to the currency symbols of different countries. For example:China: ￥US: $UK: ConnecticutThe field indicating the currency unit is represented by a variable, for example, {curr }.Replace the variable with

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

IntentService exception: java. lang. InstantiationException:, intentservice public MyIntentService() { super(nameStr); } JavalangInstantiationException in java reflection: exception, solved The error KEY is used for instantiation, and the VALUE is used for instantiation.String val = prop. getProperty (name );ObjectPool. put (name, createObje

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

When classloader is used to load resources, the following errors often occur: Exception in thread "Main" Java. Lang. noclassdeffounderror: COM/tools/resultAt java. Lang. Class. getdeclaredconstructors0 (native method)At java. Lang