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PONoClassDefFoundError while trying to run my jar with java.exe -jar...what's wrong?
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  1. PONoClassDefFoundError while trying to run my jar with java.exe -jar...what's wrong?
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    copied!<p>I have an application that I'm trying to wrap into a jar for easier deployment. The application compiles and runs fine (in a Windows cmd window) when run as a set of classes reachable from the CLASSPATH. But when I jar up my classes and try to run it with java 1.6 in the same cmd window, I start getting exceptions:</p> <pre><code>C:\dev\myapp\src\common\datagen&gt;C:/apps/jdk1.6.0_07/bin/java.exe -classpath C:\myapp\libs\commons -logging-1.1.jar -server -jar DataGen.jar Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory at com.example.myapp.fomc.common.datagen.DataGenerationTest.&lt;clinit&gt;(Unknown Source) Caused by: java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319) ... 1 more </code></pre> <p>The funny thing is, the offending LogFactory seems to be in commons-logging-1.1.jar, which is in the class path specified. The jar file (yep, it's really there):</p> <pre><code>C:\dev\myapp\src\common\datagen&gt;dir C:\myapp\libs\commons-logging-1.1.jar Volume in drive C is Local Disk Volume Serial Number is ECCD-A6A7 Directory of C:\myapp\libs 12/11/2007 11:46 AM 52,915 commons-logging-1.1.jar 1 File(s) 52,915 bytes 0 Dir(s) 10,956,947,456 bytes free </code></pre> <p>The contents of the commons-logging-1.1.jar file:</p> <pre><code>C:\dev\myapp\src\common\datagen&gt;jar -tf C:\myapp\libs\commons-logging-1.1.jar META-INF/ META-INF/MANIFEST.MF org/ org/apache/ org/apache/commons/ org/apache/commons/logging/ org/apache/commons/logging/impl/ META-INF/LICENSE.txt META-INF/NOTICE.txt org/apache/commons/logging/Log.class org/apache/commons/logging/LogConfigurationException.class org/apache/commons/logging/LogFactory$1.class org/apache/commons/logging/LogFactory$2.class org/apache/commons/logging/LogFactory$3.class org/apache/commons/logging/LogFactory$4.class org/apache/commons/logging/LogFactory$5.class org/apache/commons/logging/LogFactory.class ... (more classes in commons-logging-1.1 ...) </code></pre> <p>Yep, commons-logging has the LogFactory class. And finally, the contents of my jar's manifest:</p> <pre><code>Manifest-Version: 1.0 Ant-Version: Apache Ant 1.6.5 Created-By: 10.0-b23 (Sun Microsystems Inc.) Main-Class: com.example.myapp.fomc.common.datagen.DataGenerationTest Class-Path: commons-logging-1.1.jar commons-lang.jar antlr.jar toplink .jar GroboTestingJUnit-1.2.1-core.jar junit.jar </code></pre> <p>This has stumped me, and any coworkers I've bugged for more than a day now. Just to cull the answers, for now at least, third party solutions to this are probably out due to licensing restrictions and company policies (e.g.: tools for creating exe's or packaging up jars). The ultimate goal is to create a jar that can be copied from my development Windows box to a Linux server (with any dependent jars) and used to populate a database (so classpaths may wind up being different between development and deployment environments). Any clues to this mystery would be greatly appreciated!</p>
 

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