java.lang.NoClassDefFoundError: Copy.java

Coderanch | albert kao | 7 years ago
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  1. 0
    samebug tip
    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
  2. 0

    jdk7 & jdk6 coexist on windows XP

    Coderanch | 7 years ago | albert kao
    java.lang.NoClassDefFoundError: Copy.java
  3. 0

    Bug ID: JDK-6911104 Tests do not work with CYGWIN: tools, sun/tools, and com/sun/tools

    sun.com | 1 year ago
    java.lang.NoClassDefFoundError: JarDir.TestB.jar
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  5. 0

    Could not find main class HelloWorld

    Stack Overflow | 7 years ago | Newbie
    java.lang.NoClassDefFoundError: HelloWorld
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    Apache Storm application fails at run

    Stack Overflow | 2 years ago | JME
    java.lang.NoClassDefFoundError: backtype/storm/topology/IRichSpout

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Root Cause Analysis

  1. java.lang.ClassNotFoundException

    Copy.java

    at java.net.URLClassLoader$1.run()
  2. Java RT
    LauncherHelper.checkAndLoadMain
    1. java.net.URLClassLoader$1.run(URLClassLoader.java:299)
    2. java.net.URLClassLoader$1.run(URLClassLoader.java:288)
    3. java.security.AccessController.doPrivileged(Native Method)
    4. java.net.URLClassLoader.findClass(URLClassLoader.java:287)
    5. java.lang.ClassLoader.loadClass(ClassLoader.java:422)
    6. sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:325)
    7. java.lang.ClassLoader.loadClass(ClassLoader.java:355)
    8. sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:195)
    8 frames