classnotfoundexception

I've run into this problem a few times and only just stumbled upon a (semi-) reliable solution, so thought I would post it here in case it helps anyone else, or in case I forget it, and also to ask if anyone has any idea what the underlying cause is and why my fix works. The problem - I have a spring 3 webapp that I want to use the Run on Server option in Eclipse to run on a Tomcat 7 server. With some projects this just works, but some seem to get in a broken state whereby every time the server starts up I get a class not found: org.springframework.web.servlet.DispatcherServlet. After some

I'm trying to pick up Java and wanted to test around with Java's client/server to make the client send a simple object of a self defined class(Message) over to the server. The problem was that I kept getting a ClassNotFoundException on the server side. I think the rest of the codes seem to be alright because other objects such as String can go through without problems. I had two different netbeans projects in different locations for client and server each. Each of them have their own copy of Message class under their respective packages. Message class implements Serializable. On the client

I am getting ClassNotFoundException and NoClassDefFoundError exceptions when I attempt to run my application using a maven defined dependency. I added my maven dependency for the jar in question to my pom.xml file with the following declaration: <dependency> <groupId>spy</groupId> <artifactId>spymemcached</artifactId> <version>2.8.4</version> <scope>provided</scope> </dependency> This added the relevant JAR file to my Maven Dependencies folder in Eclipse. I can access the classes in code but I get the mentioned exceptions once I run the application. The jar is referenced in my Java build path

Why I'm getting this PHP error? Fatal error: Class 'PHPUnit_Framework_TestCase' not found in ... defines The PHPUnit documentation says used to say to include/require PHPUnit/Framework.php, as follows: require_once ('PHPUnit/Framework/TestCase.php'); UPDATE As of PHPUnit 3.5, there is a built-in autoloader class that will handle this for you: require_once 'PHPUnit/Autoload.php'; Thanks to Phoenix for pointing this out! shadi For those arriving here after updating phpunit to version 6 or greater released on 2017-02-03 (e.g. with composer), you may be getting this error because phpunit code is

I'm running Eclipse Helios Service Release 1, with Tomcat 7.0.12 in Linux Ubuntu Natty Narwhal. I've been happily hot re-deploying my webapp until it stopped working for apparently no reason. The following exception is displayed: SEVERE: Allocate exception for servlet Index java.lang.ClassNotFoundException: obliquid.servlet.Index at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1676) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1521) In Servers tab I've "Tomcat v7.0 Server at localhost [Started,Synchronized] My project appears