title: Jetty Websocket servlet InstantiationException problems
body: <p>I'm having problems to make the <a href="http://www.eclipse.org/jetty/documentation/current/jetty-websocket-server-api.html" rel="nofollow">websocket example of jetty</a> work</p>
  
  <pre><code>public class App {
  
      public static void main(String[] args)  {
  
          Server server = new Server(8080);
  
          ServletHandler handler = new ServletHandler();
          server.setHandler(handler);
  
          handler.addServletWithMapping(MyEchoServlet.class, "/test/*");
  
          try {
              server.start();
              server.join();
  
          } catch (Exception e) {
  
              e.printStackTrace();
          }
      }
  
      public class MyEchoServlet extends WebSocketServlet {
  
          @Override
          public void configure(WebSocketServletFactory factory) {
              //factory.getPolicy().setIdleTimeout(10000);
              factory.register(MyEchoSocket.class);
          }
      }
       @WebSocket(maxMessageSize = 64 * 1024)
      public class MyEchoSocket {
  
          Session session;
  
          @OnWebSocketConnect
          public void onConnect(Session session){
              this.session = session;
              System.out.println("init "+session.getUpgradeRequest().getRequestURI().getPath() );
          }
  
          @OnWebSocketMessage
          public void onText(String msg) {
               System.out.println("rec "+msg );
              try {
                  session.getRemote().sendString(msg);
              } catch (IOException e) {
                  e.printStackTrace();
              }
          }
  
          @OnWebSocketClose
          public void onClose(int statusCode, String reason) {
              System.out.println("MyWebSocket.onClose()");
          } 
      }
  }
  </code></pre>
  
  <p>gives the following error as soon as I try to create a Websocket from javascript:</p>
  
  <pre><code>var ws = new WebSocket("ws://localhost:8080/test/");
  </code></pre>
  
  <p>server error:</p>
  
  <pre><code>2013-09-14 15:57:04.076 INFO  Server - jetty-9.0.5.v20130815
  2013-09-14 15:57:04.122 INFO  ServerConnector - Started ServerConnector@1a51ce0{HTTP/1.1}{0.0.0.0:8080}
  2013-09-14 15:57:11.700 WARN  ContextHandler - unavailable
  java.lang.InstantiationException: app.App$MyEchoServlet
      at java.lang.Class.newInstance(Unknown Source)
      at org.eclipse.jetty.servlet.ServletHolder.newInstance(ServletHolder.java:979)
      at org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:523)
      at org.eclipse.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:424)
      at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:671)
      at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:505)
      at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:434)
      at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:136)
      at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
      at org.eclipse.jetty.server.Server.handle(Server.java:445)
      at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:268)
      at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:229)
      at org.eclipse.jetty.io.AbstractConnection$ReadCallback.run(AbstractConnection.java:358)
      at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:601)
      at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:532)
      at java.lang.Thread.run(Unknown Source)
  2013-09-14 15:57:11.706 WARN  ServletHandler - 
  javax.servlet.ServletException: app.App$MyEchoServlet-4598284@e19c6ca5==app.App$MyEchoServlet,-1,false
      at org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:563)
      at org.eclipse.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:424)
      at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:671)
      at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:505)
      at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:434)
      at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:136)
      at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
      at org.eclipse.jetty.server.Server.handle(Server.java:445)
      at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:268)
      at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:229)
      at org.eclipse.jetty.io.AbstractConnection$ReadCallback.run(AbstractConnection.java:358)
      at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:601)
      at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:532)
      at java.lang.Thread.run(Unknown Source)
  Caused by: java.lang.InstantiationException: app.App$MyEchoServlet
      at java.lang.Class.newInstance(Unknown Source)
      at org.eclipse.jetty.servlet.ServletHolder.newInstance(ServletHolder.java:979)
      at org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:523)
      ... 13 more
  </code></pre>
  
  <p>jetty version: 9.0.5v20130815 (from maven eclipse.jetty repo)</p>