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Questions tagged [classnotfoundexception]

The Java exception thrown when an application tries to load a class by name but is not able to find the class.

The Java exception thrown when an application tries to load a class by name. Usually raised by one of:

  • the forName(String) method in class Class
  • the findSystemClass(String) method in class ClassLoader
  • the loadClass(String) method in class ClassLoader

when no definition for the class with the specified name could be found in the .

Don't confuse it with , it's a different kind of error, see the following links for more details:

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ClassNotFoundException when running Spark application with spark-submit

I am not sure how to launch a Java app with spark-submit. When I run the following command: spark@mcava-master:/home/miren/NetBeansProjects$ /opt/spark/bin/spark-submit --class…
Miren
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Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available

I have android application. When I run or debug app on my eclipse it Works smoothly with no error no warnings.After then I get apk for Google play. Useres are getting below errors when they downloaded it from Google play market. Please help me I…
captainblack
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Jar works with standalone Hadoop, but not on the actual cluster (java.lang.ClassNotFoundException: org.jfree.data.xy.XYDataset)

I am trying to build my project using Eclipse on Windows and execute on a Linux cluster. The project depends on some external jars, which I enclosed using eclipse's "Export->Runnable JAR -> Package required library into jar" build option. I checked…
akintayo
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quartz 2.2.1+jboss EAP 6.4 ClassNotFoundException oracle.sql.BLOB

I'm trying to build a quartz scheduler ejb app and have it deployed on JBOSS EAP 6.4. Additionally, I'm trying to do so using quartz JDBC jobstore using an Oracle 11g database. Now, the problem is that whenever I try to schedule a job, I get this…
Amr
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Android Studio Start Failed - ClassNotFoundException: com.intellij.ide.plugins.PluginManager

After installing Android Studio on a new Win8.1x64 machine, whenever I try to launch it I get a ClassNotFoundException: com.intellij.ide.plugins.PluginManager and Studio does not start. I have tried unzipping instead of installing, restarting the…
RufusInZen
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Grails 2.4 ClassNotFoundException: Sitemesh GrailsPageFilter

Please note: This question is almost a duplicate to this one titled "resource plugin error when upgrading from grails 2.3.8 2.4", however a few things are different that, in my mind, make it worthy of asking it as a separate question: In that…
smeeb
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ClassNotFoundException JSP

I'm having a classNotFoundException in my jsp. Code in my JSP: <%@ page import="Model.Pattern" %> <% Pattern p = new Pattern("test");%> Can you guys tell me what's wrong with it ? I've enclosed a screenshot of the exception and the tree where the…
Elvira
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java.lang.ClassNotFoundException: org.springframework.http.converter.json.MappingJackson2HttpMessageConverter

I am using spring-integration in my project. When I deploy my app in the jetty container, I am getting the following exception: org.springframework.beans.factory.BeanCreationException: Error creating bean with name…
Ashok.N
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Deploying Maven based JSF project to Tomcat results in java.lang.ClassNotFoundException: javax.faces.webapp.FacesServlet

I've been trying to deploy JSF components on Apache Tomcat 8. Everytime I restart and deploy server I get ClassNotFoundException. LOG Jul 20, 2014 10:31:35 PM org.apache.coyote.AbstractProtocol init INFO: Initializing ProtocolHandler…
Vaibhav
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Commons Math: java.lang.ClassNotFoundException

I have this tiny bit of Java code: import java.io.*; import org.apache.commons.math3.linear.*; class Test { public static void main(String[] args){ RealVector alpha= MatrixUtils.createRealVector(new double[10]); …
user8472
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Hibernate 4 ConnectionProvider Class not found

I just updated Hibernate in my application to 4.3.4 (from 3.X), which caused some problems. The first was the new method of creating a sessionFactory, which I resolved. The next problem, which I'm finding nothing about, is that I am now getting a…
thepoynt
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java.lang.NoClassDefFoundError: org/apache/commons/collections/ReferenceMap

Really newbie in java, Spanish-speaker, so, ill do my best for you to understand me :). I made a program which manages a mysql database for storing clientes, information about clients, etc. And generates (or trying too...) reports. I installed…
neopablo2000
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Applet error ClassNotFoundException; Reload works

I browse to an html page with an applet tag. The applet tag refernces two signed jars. I receive two Security Warning dialogs indicating the revocation status cannot be checked, accept the risk, and click Run for both of them. The browser displays…
Will
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Loading Java objects with refelection produces a ClassNotFoundException with an superclass

I'm attempting to use reflection to load a custom object (Rod) from a jar file. I have managed to get it to find the jar file and scan the class for the needed annotation, but whenever I call classLoader.loadClass() I get a ClassNotFoundException…
Kanoa Haley
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Why does the following code compile but not run?

class Demo { Demo() { System.out.println("Hello From Demo"); } } class demo { demo() { System.out.println("Hello From Small Demo"); } } class Test { public static void main(String arg[]) { …
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