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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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java.lang.ClassCastException: java.lang.ClassNotFoundException cannot be cast to [Ljava.lang.Class;

I just tried to checkout a spring boot code and executed in my STS and gives this error. Even this is not giving any hint about the real issue. Like which class is not found and all. I cannot share the code due to copy right issue. Is there any way…
JAVA_CAT
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ClassNotFoundException on resolved OSGI bundle

I have a little problem with a software solution I'm maintaining. We have previously moved the entire solution from Java 1.7 to Java 1.8 and are finally having most things run again. Now I have encountered a problem. In my built product a certain…
Radioo
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Class is not found from jar from dependency jar

I have some project trying to build a microservices architecture. Some of the projects are used producing jar files (I refer these projects as "library projects".) for the callable microservices. One of these microservices are responsible for…
bkk
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How to fix "java.lang.RuntimeException: Unable to instantiate activity ... : Didn't find Class" error?

I've been trying to install the lingdx engine into the eclipse and open the default android program (with the red background) on my device. The connection is successful but the App closes itself immediately and I get the "RuntimeException ... Didn't…
Ozzy
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Classloader throws ClassDefNotFoundError when loading one class but not the other classes. What is wrong with that specific class?

I've asked around and looked around for the better part of a month and I just can't find a solution. Okay so I need help from someone who's used Java Class loaders before. Specifically, someone who's dealt with the issue of a class being in a jar…
Will
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Java determining reason of ClassNotFound

I have a Java EAR application deployed in a Oracle Weblogic Application Server. The Application is processing among others some HTTP requests In one of them it is processing some XML files (form the file system) What makes this interesting is that…
PaulEdison
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oracle.jdbc.OracleDriver found in application, not in Test

When I connect to the OracleDriver in the application, everything is fine. But when I want to connect to run the JUnit Tests, I got a ClassNotFoundException. And I do exactly the same! I have the ojbc added to the library and the testlibrary. …
Lennart
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Oracle ADF 12c : Desktopintegration Servlet DIRemoteServlet

Im trying to deploy my ADF web application, WebLogic started successfully but when I run the application server terminated and throw this exception : I installed DesktopIntegration lib and I tested to export excel sheet and it works, but the more…
stapraq ibrahim
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Eclipse Plugin Class not found exception

java.lang.NoClassDefFoundError: org/apache/commons/codec/binary/Base64 at org.com.strobe.actions.validation.valid_token(validation.java:18) at org.com.strobe.actions.project_check.check_database(project_check.java:88) at…
girish adithya
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Class not found exception using WildFly 12 . ClassName$1 not found

i am using WildFly 12 in one of my project at work. A ClassNotFound is getting me crazy even the class is correctly part of the project. Exception in thread "Thread-92" java.lang.NoClassDefFoundError:…
Junior Fulcrum
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ClassNotFoundException after some changes done in manifest file

hey guys i change the package name in manifest file so that i have a separate package for all the activities and it is giving me error classnotfoundexception when although the classes shown in log cat are present in my source folder. i even then…
abhishek
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java.lang.ClassNotFoundException, command line making problem and bash scripting

I'm new to bash scripting and cannot find a fix suitable and that I can understand on the web. The problem seems classical but I lost. I try to make my own command lines I can use directly from a bash terminal on Ubuntu. I use an alternative…
Onyr
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Running the java class in the terminal failing

I tried to run my java class generated using netbeans 10.0 in terminal as below: ~/Desktop/JavaLesson5/build/classes/javalesson5$ java javalesson5.JavaLesson5 but I keep getting the error below: Error: Could not find or load main class…
user9999696
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Eclipse plugin-dependency jar cannot find class from referenced jar

I'm currently working on updating a big program from Java 1.6 to 1.8. I'm also switching to a newer version of eclipse for this and had to struggle with quite a few workspace problems. Anyway I'm currently stuck on one of the projects not being able…
Radioo
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Why does my app, that runs fine locally, crash on Heroku?

So I have this app, that runs like a charm locally, but not on Heroku. When I look in the log-file after deploying and running, I get the following error: 2019-02-11T20:19:53.000000+00:00 app[api]: Build succeeded 2019-02-11T20:19:56.249701+00:00…
MWB
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