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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:

2221 questions
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SQL Server jar file is not running

I am running a RESTful web service projects in Spring, I have added the Sql server driver dependency in the pom.xml file. Then too am getting the following error while running. I dont know where I am lagging, but in eclipse everything is…
Shajitha Begum K
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storm-core-1.2.1.jar is missing classes

I followed the procedure listed on the Docker hub for Storm 1.2.1 to set up a minimum Storm cluster. And the image uses a Storm distribution as is. I build another plain maven project and pom file is shown as last. I try to run the examples from…
LeoZhang
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Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.6.0:java (default-cli) on project :

When I build a jar file using maven build and try running it from command line. I am getting this error. java.lang.ClassNotFoundException: at java.net.URLClassLoader.findClass (URLClassLoader.java:381) at…
Rohith Joseph
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Spark submit in IntelliJ of project jar yields Class not found error

I'm doing a basic program of implementing Drools and the program runs on an application configuration but when I try to run the JAR, I face an error. The error I get on the terminal: `Suhita-MacBookPro:Drool-CreditScore-Sample sgoswami$…
Suhita Goswami
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Cannot compile IntelliJ IDEA program to runnable JAR

I am working on a school project where I am writing a Scala class to be part of a Java project, using IntelliJ IDEA on MacOS. Here is what the folder structure looks like: TopLevelFolderName .idea .settings bin classes artifacts …
Laurier Mantel
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Dependency org.json:json:jar is missing

I have a problem with the project I am working on. Until Tuesday everything seemed to be fine when I was building and running my project. Today I wanted to run the project and I received this error message: [ERROR] [ERROR] Some problems were…
SimonaC
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JHipster with jasperreports

I'm tying to integrate jaspereports into jHipster, and all I get is: java.lang.ClassNotFoundException: net.sf.jasperreports.engine.JRException , when I try to: JasperReportsPdfView view = new JasperReportsPdfView(); I guess I miss some…
Ole A Jørgensen
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How to resolve Error java: package com.example.employee.response does not exist

My SpringBoot application has three modules controller service dao I am writing a test case for a class EmployeeDetailsController.java as EmployeeDetailsControllerTest.java inside tests folder of a springboot application. But when I run the…
J123
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java.lang.ClassNotFoundException under API Level 19

I have an app, that starts except under API 19 and I get the stacktrace below. I previously had to add to gradle's build: defaultConfig { multiDexEnabled true from another similar question I added also the dependency depenencies { ... …
mcfly soft
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how to resolve java.lang.ClassNotFoundException: Acme.JPM.Encoders.GifEncoder?

I am working on a simple example where I simply displaying a image using servlet: public class ImageServlet extends HttpServlet { private static final long serialVersionUID = 1L; protected void doPost(HttpServletRequest request, HttpServletResponse…
Rajat.r2
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ClassNotFoundException: org.apache.derby.jdbc.ClientDriver when adding Apache Derby Database jars to Eclipse project Library on Build Path

I'm building a very simple JAX-RS RESTful dynamic web project in eclipse for the purpose of studying. Using eclipse Oxygen.2 4.7.2, jersey 2.26, Jackson 2.9.0 Apache Tomcat 9.0.4 and Apache Derby 10.14.1.0 Database (for client/server mode). I've…
Benjq
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How to solve java.lang.ClassNotFoundException

I'm creating a web application using Java AngularJS and Mysql but I when I run it using apache server I get this error : GRAVE: Servlet [jersey-serlvet] in web application [/helloWorld] threw load() exception java.lang.ClassNotFoundException:…
A.Aou
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Classnotfound Exception when starting Opendaylight on WIndows

When I start Opendaylight Nitrogen (Karaf 0.7.0 or 0.7.1) I get the error that main class ...\etc\odl.java.security cannot be found. As source of the error java.lang.ClassNotFoundException: ..\karaf-0/7/1\bin\//\etc\odl\java\security is mentioned. I…
kzw
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java.lang.ClassNotFoundException: Could not load requested class : oracle.jdbc.driver.OracleDriver

I want to make a web application where my servlet will be index page when i click link or button in servlet index it should execute one java program where that java program will create json files in one directory.Then after some time i will redirect…
Shangamesh T
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java.lang.ClassNotFoundException: com.mysql.jdbc.Driver in Servlet

I am writing servlet to connect with mysql database using mysqlconnector java but it is giving error java.lang.ClassNotFoundException: com.mysql.jdbc.Driver I have tried same with core java using the same driver it is connecting to mysql and…
manafi group
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