#classnotfoundexception

I’ve set up an application skeleton in Google App Engine using Spring Roo 1.1.5, that uses maven-gae-plugin. I’ve changed maven-gae-plugin version to 0.9.2 and a few other versions in the resulting pom.xml

<spring.version>3.0.6.RELEASE</spring.version> <spring-security.version>3.1.0.RELEASE</spring-security.version> <gae.version>1.6.0</gae.version>

Compilation works, running mvn gae:run,…

Resolved: java.lang.ClassNotFoundException: org.springframework.web.context.ContextLoaderListener #fix #dev #computers

java.lang.ClassNotFoundException: org.springframework.web.context.ContextLoaderListener

I included:

all Spring libs,

Apache Tomcat 7.0 library

in Build Path

but it still gives errors:

SEVERE: Error configuring application listener of class org.springframework.web.context.ContextLoaderListener java.lang.ClassNotFoundException: org.springframework.web.context.ContextLoaderListener at…

java.lang.ClassNotFoundException: org.springframework.web.context.ContextLoaderListener

I included:

all Spring libs,

Apache Tomcat 7.0 library

in Build Path

but it still gives errors:

SEVERE: Error configuring application listener of class org.springframework.web.context.ContextLoaderListener java.lang.ClassNotFoundException: org.springframework.web.context.ContextLoaderListener at…

What is the difference between NoClassDefFoundError and ClassNotFoundException?

I want to know the difference between the specified error and the exception.

What is the reason for getting each of them and any thought process on how to deal with such errors?

While working on a project. If we are modifying the existing code to include the new jar file I get to face these exceptions. Sometimes they…

Error Scenario:

java.lang.ClassNotFoundException      or   java.lang.NoClassDefFoundError

Error starting MRAppMaster   &  Container exited with a non-zero exit code 1

When we encounter a situation of NoClassDefFoundError or ClassNotFoundException even though we have required jar files added to our build path in eclipse, then we have a short cut to resolve this error message at run time.

Generally…

Problem:

Beim deployen eines JSF Projektes auf den Tomcat-Server via Eclipse, erscheint für eine beliebige Klasse: java.lang.ClassNotFoundException

Lösung:

In diesem Fall ist nicht das Projekt zu cleanen, sondern der Tomcat-Server.

Servers View in Eclipse öffnen

Rechtsklick auf Tomcat Server -> Stop

Rechtsklick auf Tomcat Server -> Clean Tomcat Work Directory...

Rechtsklick auf Tomcat Server -> Clean...