title: JSONObject etc instantiation crashing
body: <p>I am trying to learn how to use JSON and writing a simple program however whenever I instantiate a JSON Object it crashes.
  What am I missing if I receive this error when trying to instantiate a JSONObject or JSONArray. I have added <a href="http://sourceforge.net/projects/json-lib/files/" rel="nofollow">http://sourceforge.net/projects/json-lib/files/</a> this JSON library to the build path. Is there anything I am missing?</p>
  
  <p>The error message is as follows:</p>
  
  <pre><code>Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/lang/exception/NestableRuntimeException
      at java.lang.ClassLoader.defineClass1(Native Method)
      at java.lang.ClassLoader.defineClassCond(Unknown Source)
      at java.lang.ClassLoader.defineClass(Unknown Source)
      at java.security.SecureClassLoader.defineClass(Unknown Source)
      at java.net.URLClassLoader.defineClass(Unknown Source)
      at java.net.URLClassLoader.access$000(Unknown Source)
      at java.net.URLClassLoader$1.run(Unknown Source)
      at java.security.AccessController.doPrivileged(Native Method)
      at java.net.URLClassLoader.findClass(Unknown Source)
      at java.lang.ClassLoader.loadClass(Unknown Source)
      at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
      at java.lang.ClassLoader.loadClass(Unknown Source)
      at jsonexp.JSONexp.&lt;init&gt;(JSONexp.java:36)
      at jsonexp.JSONexp.main(JSONexp.java:55)
  Caused by: java.lang.ClassNotFoundException: org.apache.commons.lang.exception.NestableRuntimeException
  </code></pre>
  
  <p>I have learned that this sort of error occurs when the library being used depends on another library.</p>
  
  <p>I do not know how to deal with this problem and would very much appreciate some help.</p>
  
  <p>Thanks.</p>