title: Gwt - Unable to load module entry point class
body: <p>I've included the dnd jar in my gwt project(on the build path and on the class path) and when I execute the program the following exception occur.
  And I've also included the following line in the module : 
  <code>&lt;inherits name='com.allen_sauer.gwt.dnd.gwt-dnd' /&gt;</code></p>
  
  <pre><code> Unable to load module entry point class com.allen_sauer.gwt.dnd.client.util.DragEntryPoint
  
   java.lang.NoClassDefFoundError: com/google/gwt/core/client/EntryPoint
  at java.lang.ClassLoader.findBootstrapClass(Native Method)
  at java.lang.ClassLoader.findBootstrapClassOrNull(ClassLoader.java:1070)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:414)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
  at com.google.gwt.dev.shell.CompilingClassLoader.loadClass(CompilingClassLoader.java:1192)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
  at java.lang.Class.forName0(Native Method)
  at java.lang.Class.forName(Class.java:274)
  at com.google.gwt.dev.shell.ModuleSpace.loadClassFromSourceName(ModuleSpace.java:670)
  at com.google.gwt.dev.shell.ModuleSpace.onLoad(ModuleSpace.java:378)
  at com.google.gwt.dev.shell.OophmSessionHandler.loadModule(OophmSessionHandler.java:200)
  at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:526)
  at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:364)
  at java.lang.Thread.run(Thread.java:745)
  </code></pre>
  
  <p>`
  I would like to understand why this error occur when a jar file is added to the project.
  For information i'm using the jdk 1.7 </p>