Class.getMethod() has thrown a NoClassDefFoundError

java.lang.ClassNotFoundException
Javadoc
Thrown when an application tries to load in a class through its string name using:
  • The forName method in class Class.
  • The findSystemClass method in class ClassLoader .
  • The loadClass method in class ClassLoader.

but no definition for the class with the specified name could be found.

As of release 1.4, this exception has been retrofitted to conform to the general purpose exception-chaining mechanism. The "optional exception that was raised while loading the class" that may be provided at construction time and accessed via the {@link #getException()} method is now known as the cause, and may be accessed via the {@link Throwable#getCause()} method, as well as the aforementioned "legacy method." @author unascribed @see java.lang.Class#forName(java.lang.String) @see java.lang.ClassLoader#findSystemClass(java.lang.String) @see java.lang.ClassLoader#loadClass(java.lang.String, boolean) @since JDK1.0

at java.net.URLClassLoader$1.run
at java.net.URLClassLoader$1.run
at java.security.AccessController.doPrivileged
(source)
at java.net.URLClassLoader.findClass
(source)
at java.lang.ClassLoader.loadClass
(source)
at sun.misc.Launcher$AppClassLoader.loadClass
(source)
at java.lang.ClassLoader.loadClass
(source)
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.getDeclaredMethods0
(source)
at java.lang.Class.privateGetDeclaredMethods
(source)
at java.lang.Class.getMethod0
(source)
at java.lang.Class.getMethod
(source)
10 frames hidden

Typical Exception Messages

  1. scala/Function0
  2. org/apache/commons/cli/CommandLineParser
  3. org/lwjgl/LWJGLException
  4. org/openqa/selenium/WebDriver
  5. joptsimple/OptionSpec
  6. com/android/utils/ILogger
  7. org/kohsuke/args4j/CmdLineException
  8. clojure/lang/IFn
  9. com/google/gwt/core/ext/TreeLogger
  10. com/badlogic/gdx/ApplicationListener

Origin

Class.getMethod0() has thrown a NoClassDefFoundError

java.lang.ClassNotFoundException
9 frames hidden
java.lang.Class.getMethod0
273Web pages

Specific cases

Solution

rafael, 1 year ago

This error means there's a class missing in your classpath during runtime. You need to create a jar with all your dependencies and have it in your classpath. Check Maven Assembly Plugin and how to add your dependencies to a jar: https://goo.gl/U2zr8k

Check the source of this solution for more info

External results for this pattern (273)

  1. AbdulAlivia GitHub3 months ago
    soot/Transformer
    Show stack trace
  2. Unknown authorvia grokbase.com3 months ago
    com/google/gwt/core/ext/TreeLogger
    Show stack trace
  3. xkmvia Stack Overflow3 months ago
    com/google/gwt/core/ext/TreeLogger
    Show stack trace
  4. banjinvia GitHub3 months ago
    backtype/storm/topology/IRichBolt
    Show stack trace
  5. Juhapekka Tolvanenvia Google Groups3 months ago
    org/pdfbox/cos/ICOSVisitor
    Show stack trace
  6. org/apache/spark/mllib/recommendation/Rating
    Show stack trace
  7. com/amazonaws/AmazonClientException
    Show stack trace
  8. Kmsvia Stack Overflow3 months ago
    org/apache/commons/io/filefilter/IOFileFilter
    Show stack trace
  9. org/lwjgl/LWJGLException
    Show stack trace