title: gwt java.lang.ExceptionInInitializerError
body: <p>I'm working on a GWT app, and keep getting the error shown below. </p>
  
  <p>I followed the GWT tutorial regarding naming conventions for servlet classes, and followed the Service / Async / ServiceImpl structure. </p>
  
  <p>I also tried adding the <code>-XX:-UseSplitVerifier</code> VM argument to fix a previous problem. any ideas on what's going on?</p>
  
  <pre><code>SEVERE: javax.servlet.ServletContext log: Exception while dispatching incoming RPC    
  call
  java.lang.ExceptionInInitializerError
  at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
  at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
  at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
  at java.lang.reflect.Constructor.newInstance(Unknown Source)
  at   
  
  com.google.appengine.tools.development.agent.runtime.Runtime.newInstance_   
  (Runtime.java:127)
  at com.google.appengine.tools.development.agent.runtime.Runtime.newInstance  
  (Runtime.java:135)
  at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.instantiate 
  (ServerSerializationStreamReader.java:914)
  at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.deserialize 
  (ServerSerializationStreamReader.java:556)
  at com.google.gwt.user.client.rpc.impl.AbstractSerializationStreamReader.readObject 
  (AbstractSerializationStreamReader.java:119)
  at   
  com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader$ValueReader$8. 
  readValue(ServerSerializationStreamReader.java:138)
  at  
  com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.deserializeValue 
  (ServerSerializationStreamReader.java:385)
  at com.google.gwt.user.server.rpc.RPC.decodeRequest(RPC.java:303)
  at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall  
  (RemoteServiceServlet.java:206)
  at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost  
  (RemoteServiceServlet.java:248)
  at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost
  (AbstractRemoteServiceServlet.java:62)
  at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
  at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
  at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
  at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
  (ServletHandler.java:1166)
  at com.google.appengine.tools.development.HeaderVerificationFilter.doFilter
  (HeaderVerificationFilter.java:35)
  at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
  (ServletHandler.java:1157)
  at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter
  (ServeBlobFilter.java:60)
  at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
  (ServletHandler.java:1157)
  at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter
  (TransactionCleanupFilter.java:43)
  at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
  (ServletHandler.java:1157)
  at com.google.appengine.tools.development.StaticFileFilter.doFilter
  (StaticFileFilter.java:122)
  at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
  (ServletHandler.java:1157)
  at com.google.appengine.tools.development.BackendServersFilter.doFilter
  (BackendServersFilter.java:97)
  at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
  (ServletHandler.java:1157)
  at org.mortbay.jetty.servlet.ServletHandler.handle
  (ServletHandler.java:388)
  at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
  at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
  at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
  at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
  at com.google.appengine.tools.development.DevAppEngineWebAppContext.handle
  (DevAppEngineWebAppContext.java:78)
  at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
  at  
  com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle
  (JettyContainerService.java:369)
  at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
  at org.mortbay.jetty.Server.handle(Server.java:326)
  at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
  at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:938)
  at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755)
  at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
  at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
  at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
  at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
  Caused by: java.lang.UnsupportedOperationException: ERROR: GWT.create() is only usable    
  in client code!  It cannot be called, for example, from server code.  If you are  
  running a unit test, check that your test case extends GWTTestCase and that 
  GWT.create() is not called from within an initializer or constructor.
  at com.google.gwt.core.client.GWT.create(GWT.java:91)
  at com.google.gwt.user.client.ui.UIObject.&lt;clinit&gt;(UIObject.java:187)
  ... 46 more
  </code></pre>