Error 500 Java.lang.classcastexception
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up java.lang.ClassCastException up vote 13 down vote favorite 5 Normally whats the reason to get java.lang.ClassCastException ..? I get the following error in my application java.lang.ClassCastException: [Lcom.rsa.authagent.authapi.realmstat.AUTHw java share|improve this question edited Aug 18 '10 at 10:42 krock 18.9k64965 asked Aug 18 '10 at 10:39 selvam 96225 Looks like you don't have the full exception message there. Assuming you're using Java 5 or later the exception should include details of what can't be cast to what e.g. ` java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Integer` –mikej Aug 18 '10 at 10:45 add a comment| 6 Answers 6 active oldest votes up vote 30 down vote accepted According to the documentation: Thrown to indicate that the code has attempted to cast an Object to a subclass of which it is not an instance. For example, the following code generates a ClassCastException: Object x = new Integer(0); System.out.println((String)x); share|improve this answer edited Dec 6 '13 at 4:57 AndroidOptimist 73611227 answered Aug 18 '10 at 10:41 Laurențiu Dascălu 84321221 5 +1 for documentaton. The documentation of exceptions usually gives a good hint at what could be wrong. –Joachim Sauer Aug 18 '10 at 10:46 +1 for documentation! If you don't feel like using google all the time you can download the source of the java library (or search if you already have src.zip somewhere in your java sdk folder). Then if you link it to your project you can just open the relevant file and read the javadocs there... –Michael Clerx Aug 18 '10 at 15:16 bine Laur, ce mic e internetul :) –ieugen Jul 24 '13 at 6:01 add a comment| Did you find this question interesting? Try our newsletter Sign up for our newsletter and get our top new questions delivered to your inbox (see an example). Subscribed! Success! Please click the link in the confirmation email to activate your subscription. up vote 11 down vote A ClassCastException ocurrs when you try t
This Site Careers Other all forums Forum: JSP Error in JSP java.lang.ClassCastException Neeraj jain Ranch Hand Posts: 108 posted 3 years ago I am using a bean class to insert a record inside the database (Ms-access) but getting http://stackoverflow.com/questions/3511169/java-lang-classcastexception an error Error 500--Internal Server Error java.lang.ClassCastException at jsp_servlet.__student._jspService(__student.java:127) at weblogic.servlet.jsp.JspBase.service(JspBase.java:33) at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1053) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:387) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:305) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6291) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:317) at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:97) at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3575) at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2573) at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:178) at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:151) Student.jsp is below https://coderanch.com/t/615354/JSP/java/Error-JSP-java-lang-ClassCastException
Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us http://serverfault.com/questions/580326/tomcat-localhost-page-showing-http500-but-i-can-access-the-sample-war-app-bu Learn more about Stack Overflow the company Business Learn more about hiring developers https://confluence.atlassian.com/display/JIRAKB/Cannot+create+new+issue+after+upgrade+due+to+java.lang.ClassCastException%3A+java.lang.String+cannot+be+cast+to+java.lang.Long or posting ads with us Server Fault Questions Tags Users Badges Unanswered Ask Question _ Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted error 500 up and rise to the top Tomcat localhost page showing HTTP500 but I can access the 'sample' war / app but no others - Jenkins installed up vote 0 down vote favorite I'm trying to set up my server properly so that I can run servlets on it with the help from Jenkins. Within the webapps folder are two war files. One for jenkins and one for the error 500 java.lang.classcastexception sample from apache. Both work fine but when trying to access localhost:8080 I get an HTTP 500 error. I first discovered the error as I was trying to get a spring web app to deploy. All have so far failed although if I run the web app on my laptop it works fine so I'm assuming that the war file and the web app itself are fine. Is there a possibility that the previous war files that I tried to deploy have caused a problem somewhere? The laptop does not have jenkns installed - could jenkins be causing the problem? I searched various posts and tried to find the jar file within other folders within the webapp directory but could find nothing. I then deleted all of the war files with the exception of jenkins. Jenkins loads but the main page does not. Thanks for any help. The full error message is: HTTP Status 500 - java.lang.ClassCastException: org.apache.jasper.runtime.ELContextImpl cannot be cast to org.apache.jasper.el.ELContextImpl type Exception report message java.lang.ClassCastException: org.apache.jasper.runtime.ELContextImpl cannot be cast to org.apache.jasper.el.ELContextImpl description The server encountered an internal error that prevented it from fulfilling this request. exception org.apache.jasper.JasperException: java.lang.ClassCastException: org.apache.jasper.runtime.ELContextImpl cannot be cast to org.apache.jasper.el.ELContextImpl org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:549) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:470) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334) javax.servlet.ht
UI) and the following appears in theatlassian-jira.log: 2012-11-07 12:01:53,289 http-8080-2 ERROR [500ErrorPage.jsp] Exception caught in 500 page java.lang.String cannot be cast to java.lang.Long java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Long at com.atlassian.jira.issue.customfields.impl.MultiSelectCFType.getDefaultValue(MultiSelectCFType.java:166) at com.atlassian.jira.issue.customfields.impl.MultiSelectCFType.getDefaultValue(MultiSelectCFType.java:71) at com.atlassian.jira.issue.fields.CustomFieldImpl.populateDefaults(CustomFieldImpl.java:580) ... Cause The default value of the Multiselect or Select Custom Field is not migrated to a correct format in the database Resolution Search for the invalid default value by running this query (select the one the corresponds to your database type. For HSQL, you can use the MySQL syntax):For MySQL SELECT * FROM genericconfiguration where DATAKEY IN (SELECT b.id FROM customfield a, fieldconfiguration b where b.FIELDID=INSERT('customfield_',13,5,a.id) AND CUSTOMFIELDTYPEKEY like '%select%') AND xmlvalue like'%
Take note of the value in the DATAKEY column of the result set. This is theaffectedcustomfield ID. In our example, this ID is 10150. Run the qu