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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 is driving me crazy

I am trying to run this basic RMI example provided in the Java website: https://docs.oracle.com/javase/7/docs/technotes/guides/rmi/hello/hello-world.html And it just won't run because I think it can't find the interface. It always throws this…
Doctor
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JavaFX ProGuard app is not working after obfuscate

i'm writing this question after 4 days of trying obfuscate my javaFX app without success... About project: JDK: Azul JavaFX 8.42.0.23 Build tool: Maven Ide: Intelij ProGuard ver: 6.2.2 What is the problem: I cant properly obfuscate my code. After…
Paweł
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Configuring collapseComponent in apachesolr

I have applied the collapsecomponent patch to solr 3.1.0 My question is , how do I configure it in solrconfig.xml? What needs to be added. Right now I have added the following and its giving me a classnotfound exception for the collapsecomponent…
Karan
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Using a DB2 driver to access as400

I'm relatively new to SQL, I am having some problems connecting to an AS/400 DB2 database. I've managed to connect to MySQL, Microsoft SQL Server and Netezza databases without much trouble, but I cannot connect to this DB! I keep getting the…
Adsy1944
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How can I resolve a ClassNotFoundEception of Qt app on an Android device?

I'm using Qt for Android and JNI to access Android APIs. This works fine, if I run the app in simulators with a virtual Android device but not on a physical Android device. This is confusing. I develop with Qt Creator 4.11.0 based on Qt 5.14.0…
Brian Sanders
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IRC Bot Android Studio using PircbotX

I am coding an IRC Bot using PircbotX library and without android studio it works perfectly. When I run my application, I got this error in my console: 2020-01-07 13:25:20.050 19323-19323/? W/ordwalrus.alit: Unexpected CPU variant for X86 using…
Samuele Calugi
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Apache Http Components dependency in WAR produces ClassNotFoundException: org.apache.http.client.methods.HttpUriRequest in WebSphere

I have a problem with a maven dependency on a J2ee project (EAR + WAR). More in detail: In the WAR project pom I have a JAR application dependency: JAR_APP_groupid JAR_APP_artifactid …
antopas
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Handler dispatch failed; nested exception is java.lang.NoClassDefFoundError: org/rundeck/plugin/scm/git/GitImportPlugin$_getStatusInternal_closure2

After a few hours of rundeck humming along, I get the following error when trying to view Jobs. Restarting tomcat solves the problem. I have git-import configured. It has been shown to be working correctly. Rundeck is running in AWS Tomcat is…
Felipe Alvarez
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Can't resolve java.lang.ClassNotFoundException

I'm trying to run a simple java program with terminal: public class Test { public static void main(String...args) { System.out.println("Hello World"); } } So i compile using this command: javac Test.java and…
alessandro.zinni
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Drools cannot find the compiler when I try to load a Decision Table

I work on a program which its integrate an engine rule, build with Drools. At the startup of my program I load spreadsheet files with Drools and everything is fine. My class constructor : public DecisionTable(ApplicationServiceImpl…
Fred37b
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java.lang.ClassNotFoundException while executing DB connection statements

I have set of DB connection statements in my java file which takes the driver name, url, username and password from my property file and then try to make a connection. But I am keep getting error exactly in this try block . My code is try { …
Sankar
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Vaadin 14 - BeanManager Class not found

I'm testing out Vaadin 14 for a concept product at work. I've already made sure to install NodeJS (V13.3.0) and NPM (6.13.1), and included it into my POM.xml file. I am currently using JRE and JDK V1.8.0.231 After setting everything up I've run the…
Wilmie Smal
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Java jar application not running on double click or from cmd using JDK 13.0.1

When I jar my program it doesn't run on double click, cmd, or from an IDE, but when it is not in jar form the program runs just fine in the IDE and using the cmd. I've linked the manifest to the main class correctly, but it still doesn't work. I've…
Dnomruht
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Java: ClassNotFound exception

I'm trying to run a Java project from GitHub and having a weird exception. Here is the portion of the code affected: package de.fau.cs.osr.hddiff.perfsuite; import de.fau.cs.osr.hddiff.utils.Report; public class PerformanceSuite { private…
Milos Cuculovic
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spring boot override bean in different jar cause ClassNotFoundException

I ve a "core" application how I want to be "pluginable", so I write some interface and relatives empty bean just to "holding the place" Project 1 Void Bean public class VoidDirectiveWriter implements DirectiveWriter { private…
Stefano Riffaldi
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