yeah, i found this
thanks alot Sumi

On Dec 27, 9:59 pm, Sumi <[email protected]> wrote:
> are you using any of these mail.jar, mailapi.jar, smpt.jat and pop3.jar in
> your project?if so remove them ..
>
> On Mon, Dec 27, 2010 at 11:44 AM, Ahmed Shoeib <
>
> [email protected]> wrote:
> > hi all,
>
> > i use this code for sending mail
> >http://code.google.com/appengine/docs/java/mail/usingjavamail.html
>
> > and after uploading this application to AppEngine account
> > i face this problem
>
> > javax.servlet.ServletContext log: Exception while dispatching incoming
> > RPC call
> > com.google.gwt.user.server.rpc.UnexpectedException: Service method
> > 'public abstract void
>
> > com.fuoeg.testMail.client.SendMailService.login(java.lang.String,java.lang.String,java.lang.String,java.lang.String)'
> > threw an unexpected exception: java.lang.NoClassDefFoundError:
> > java.net.Socket is a restricted class. Please see the Google App
> > Engine developer's guide for more details.
> >        at
> > com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure(RPC.java:
> > 378)
> >        at
> > com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:
> > 581)
> >        at
>
> > com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:
> > 207)
> >        at
>
> > com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:
> > 243)
> >        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.apphosting.utils.servlet.ParseBlobUploadFilter.doFilter(ParseBlobUploadFilter.java:
> > 97)
> >        at org.mortbay.jetty.servlet.ServletHandler
> > $CachedChain.doFilter(ServletHandler.java:1157)
> >        at
>
> > com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java:
> > 35)
> >        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
> > 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.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java:
> > 238)
> >        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
> > $RequestHandler.headerComplete(HttpConnection.java:923)
> >        at
>
> > com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java:
> > 76)
> >        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
> >        at
>
> > com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:
> > 135)
> >        at
> > com.google.apphosting.runtime.JavaRuntime.handleRequest(JavaRuntime.java:
> > 261)
> >        at com.google.apphosting.base.RuntimePb$EvaluationRuntime
> > $6.handleBlockingRequest(RuntimePb.java:8495)
> >        at com.google.apphosting.base.RuntimePb$EvaluationRuntime
> > $6.handleBlockingRequest(RuntimePb.java:8493)
> >        at
>
> > com.google.net.rpc.impl.BlockingApplicationHandler.handleRequest(BlockingApplicationHandler.java:
> > 24)
> >        at com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java:
> > 435)
> >        at com.google.net.rpc.impl.Server$RpcTask.runInContext(Server.java:
> > 572)
> >        at com.google.tracing.TraceContext$TraceContextRunnable
> > $1.run(TraceContext.java:448)
> >        at com.google.tracing.TraceContext.runInContext(TraceContext.java:
> > 688)
> >        at com.google.tracing.TraceContext
>
> > $AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:
> > 326)
> >        at com.google.tracing.TraceContext
> > $AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:
> > 318)
> >        at com.google.tracing.TraceContext
> > $TraceContextRunnable.run(TraceContext.java:446)
> >        at
> > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:
> > 1110)
> >        at java.util.concurrent.ThreadPoolExecutor
> > $Worker.run(ThreadPoolExecutor.java:603)
> >        at java.lang.Thread.run(Thread.java:636)
> > Caused by: java.lang.NoClassDefFoundError: java.net.Socket is a
> > restricted class. Please see the Google App Engine developer's guide
> > for more details.
> >        at java.net.Socket.<clinit>(Socket.java)
> >        at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:
> > 278)
> >        at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:227)
> >        at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:
> > 1672)
> >        at
> > com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:
> > 525)
> >        at javax.mail.Service.connect(Service.java:248)
> >        at javax.mail.Service.connect(Service.java:91)
> >        at javax.mail.Service.connect(Service.java:76)
> >        at javax.mail.Transport.send(Transport.java:94)
> >        at javax.mail.Transport.send(Transport.java:48)
> >        at
>
> > com.fuoeg.testMail.server.SendMailServiceImpl.login(SendMailServiceImpl.java:
> > 35)
> >        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> >        at
> > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
> > 57)
> >        at
>
> > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
> > 43)
> >        at java.lang.reflect.Method.invoke(Method.java:43)
> >        at
> > com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:
> > 562)
> >        at
>
> > com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:
> > 207)
> >        at
>
> > com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:
> > 243)
> >        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 org.mortbay.jetty.servlet.ServletHandler
> > $CachedChain.doFilter(ServletHandler.java:1157)
> >        at org.mortbay.jetty.servlet.ServletHandler
> > $CachedChain.doFilter(ServletHandler.java:1157)
> >        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
> > 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.headerComplete(HttpConnection.java:923)
> >        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
> >        ... 11 more
>
> > how can i solve this problem ??
>
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