Failed to load the class from current classpath

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)
6 frames hidden

Typical Exception Messages

  1. org.slf4j.LoggerFactory
  2. com.mysql.jdbc.Driver
  3. cpw.mods.fml.common.launcher.FMLTweaker
  4. org.apache.commons.logging.LogFactory
  5. javafx.application.Application
  6. org.lwjgl.LWJGLException
  7. org.apache.log4j.Logger
  8. org.bouncycastle.asn1.DEREncodable
  9. org.json.JSONException
  10. org.postgresql.Driver

Origin

Launcher$AppClassLoader.loadClass() has thrown a ClassNotFoundException

java.lang.ClassNotFoundException
5 frames hidden
sun.misc.Launcher$AppClassLoader.loadClass
4189Web pages

Similar

Specific cases

Solution

poroszd, 4 months ago

Check the name of the class not found in the message, and stop in a breakpoint in the loadClass() method. When it is stopped, check the current classpath and find the missing dependency.

External results for this pattern (4169)

  1. SkyBridge007via GitHub2 weeks ago
    org.jfree.date.MonthConstants
    Show stack trace
  2. bouteillvia GitHub3 weeks ago
    com.martiansoftware.nailgun.examples.HelloWorld
    Show stack trace
  3. MartinYiWuvia GitHub3 weeks ago
    org.apache.velocity.context.Context
    Show stack trace
  4. yb755via GitHub3 weeks ago
    com.alibaba.jvm.sandbox.api.Module
    Show stack trace
  5. com.eviware.soapui.plugins.auto.factories.AutoDiscoveryMethodFactory
    Show stack trace