title: The dreaded java.lang.NoClassDefFoundError
body: <p>I've looked through many of the existing threads about this error, but still no luck.  I'm not even trying to package a jar or use any third-party packaging tools.  I'm simply running from within Eclipse (works great) and then trying to run the exact same app from the command line, in the same location it's built to (getting this error).  My goal is to be able to zip up the bin folder and send it off to be run by someone else via a command line script. Some details:</p>
  
  <ul>
  <li>It's a command-line app and I'm using the commons-lang-2.4.jar for string utilities.  That is the file that cannot be located (specificaly "java.lang.NoClassDefFoundError: org/apache/commons/lang/StringEscapeUtils")</li>
  <li>I have that jar in my lib folder and have added it to my build path in Eclipse via right-click "Build Path -> Add to Build Path"</li>
  <li>The .classpath file looks correct and contains the reference to the jar, but I assume that file is only used by Eclipse (contains this line: <code>&lt;classpathentry kind="lib" path="lib/commons-lang-2.4.jar"/&gt;</code>)</li>
  <li>Could this be related to the Eclipse working directory setting?  I have some internal template files that I created that are under src/templates, and the only way I can seem to get those to be seen is by setting the project working directory to AppName/src.  Maybe I should be putting those somewhere else?</li>
  </ul>
  
  <p>Let me know if any additional info would help.  Surely this is something simple, but I've wasted too much time on it at this point.  This is reminding me why I originally left Java back in '05 or so...</p>