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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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What does it mean if a JDBC driver is unable to find a particular class

I work with reports and currently seeing a warning in my BIRT designer(Eclipse) error logs: "Cannot load driverClass: org.apache.hive.jdbc.HiveDriver" I have dealt with classnotfound issues before and usually updating the correct driver resolved…
Echo
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Exception in thread "main" java.lang.NoClassDefFoundError: oracle/stellent/ridc/IdcClientManager

I have a java class that does an FTP to UCM server. I imported the RIDC extension bundle to JDeveloper and created an RIDC based project. The compilation was successful. When i run the application locally on JDeveloper Integrated Weblogic Server,…
Malini M
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Java - Trying to extract url from email

I'm trying to extract an url from email. I'm using selenium webdriver and I want to check through the test the email account to verify email was sent. I managed to get to the email account and I did a few testings with it but when trying to use it…
yakir saadia
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javassist - ClassNotFoundException using a custom Translator

I have two classes in my test package: Bean, Demo2 and VerboseLoader. Bean.java: package test; public class Bean { } VerboseLoader.java: package test; import javassist.CannotCompileException; import javassist.ClassPool; import…
Antonio Santoro
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ClassNotFoundException in Web Application using struts

I am developing a web application using Apache Struts, to be deployed on JBoss Server. Using eclipse for development. I have configured web.xml to forward all *.do requests to ActionServlet. A JSP page (abc.jsp) has a form with…
Shailesh Tainwala
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Exception,without handling,code running well. ClassnotfondException

try{ if((Boolean)ppb.getParameters().get("abc")){ Sysout.print("if true it goes inside else continue the code below"); } System.out.print("if classcastexception print this") }catch{ System.out.print("classcastexception but…
Francesco.Chan
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No class def found for the first time of accessing the class even when the related jar is available

Sample code snippet. class Sample extends Test1 ,Test2 { ... } The class Sample is in x_util.jar and the class Test2 is in y_const.jar. Both the jars are in the same lib folder of JBoss. Problem When I am trying to access the class Sample for the…
Code Learner
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Calling custom java class from python using JPype

Getting class not found exception while trying to call java class from python using jpype. Below are version and path details: JPype version:JPype1-py3 Python: 3.6 Java: 1.8.0_171 Java file path:…
Neha Pandey
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Java reflect Class.forName failure

Using: final Class c = Class.forName(path); Here is where the classes exist: http://prntscr.com/juqp7g This is the error: java.lang.ClassNotFoundException: interfaces/container/InventoryComponentAction at java.lang.Class.forName0(Native…
kay
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Using my own Library, will not find class

I am working on my Bukkit plugin, and I have a nice Library that I made in which I'd like to use. Unfortunately, I am being told that the class for the library is not being found. org.bukkit.plugin.InvalidPluginException:…
Luaq
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Java Object streams to libGDX project

i did try to test some stuff about Client/server communication in Java because i wanted to build a game with a client/server architecture. So i read some articles and so on... it all worked till i tried to use the same classes and methods in a…
Falafelrollo
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ClassNotFound in HazelcastMembers for ReplicatedMaps, but ok for Maps

Our Problem might be similar to that one: Hazelcast ClassNotFoundException for replicated maps Since the description of the environment is not given in detail I describe our problematic enironment here: We have a dedicated Hazelcast Server(Member),…
magicroomy
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ClassNotFoundException : com.mysql.jdbc.Driver but it's in the classpath

enter image description here I have this Exception but the Jar file are in the referenced libraries. I dont't know where is the problem. The code is alright and I have added all in the build path. String DRIVER_CLASS_NAME = "com.mysql.jdbc.Driver";…
Sante Altamura
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Creating excel file: ClassNotFoundException: org.apache.poi.ss.usermodel.Font while spring apps startup

I am developing an application to export objects into an excel. When I tested as standalone application its working fine. But when I moved the same code to my spring service class then my webapp is failing due to the ClassNotFoundException:…
abyin007
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Import class in Java via absolute path

I've been trying to import a .class via absolute path while code is running and I don't know how to do it. I found a way to import a class when it's already in project's build path by Class.forName();but I need to find a way to load a class that is…
mr. Gauss
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