Missing jar file containing class in WEB-INF/lib directory of the project

java.lang.NoClassDefFoundError
Javadoc
Thrown if the Java Virtual Machine or a ClassLoader instance tries to load in the definition of a class (as part of a normal method call or as part of creating a new instance using the new expression) and no definition of the class could be found.

The searched-for class definition existed when the currently executing class was compiled, but the definition can no longer be found. @author unascribed @since JDK1.0

at java.lang.Class.getDeclaredConstructors0
(source)

Typical Exception Messages

  1. <No message>
  2. org/jdesktop/layout/GroupLayout$Group
  3. javax/faces/FacesException
  4. org/apache/commons/digester/RuleSet
  5. org/apache/commons/beanutils/Converter
  6. javax/mail/MessagingException
  7. javax/el/ExpressionFactory
  8. javax/el/CompositeELResolver
  9. org/apache/log4j/Category
  10. org/apache/commons/mail/EmailException

Specific cases

External results for this pattern (873)

  1. hooriganvia GitHub3 days ago
    cio
    Show stack trace
  2. znyangvia GitHub1 week ago
  3. Пеђаvia Google Groups2 weeks ago
    Error creating bean with name 'mailSender' defined in ServletContext resource [/WEB-INF/config/applicationContext-mail.xml]: Instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: javax/mail/MessagingException
    Show stack trace
  4. Andrey Stanovskyvia Google Groups2 weeks ago
    org/apache/hadoop /security/AccessControlException
    Show stack trace
  5. Eric Jainvia Google Groups2 weeks ago
    org/hibernate/MappingException
    Show stack trace
  6. Emiliano Desiderivia Google Groups2 weeks ago
    javax/mail/MessagingException
    Show stack trace
  7. hongluovzvia GitHub1 month ago
    org/apache/velocity/context/Context
    Show stack trace
  8. drakrayvia GitHub1 month ago
    net/minecraft/client/particle/Particle
    Show stack trace
  9. jodastephenvia GitHub2 months ago
    org/apache/maven/doxia/siterenderer/DocumentContent
    Show stack trace