CometSerializer not able to instantiate on Browser refresh.

[Shubhen Pal]

Hi,

I have instantiated the CometSerialzer using

MyCometSerializer serializer=GWT.create(MyCometSerializer.class);


when i am refreshing the webpage i am getting null pointer exception as shown below  Please Suggest

00:01:09.546 [ERROR] Generator 'net.zschech.gwt.comet.rebind.CometSerializerGenerator' threw an exception while rebinding 'com.ril.vnoc.client.comet.JVOCCometSerializer'
java.lang.NullPointerException: null     at com.google.gwt.user.rebind.rpc.TypeSerializerCreator.findReusableCachedFieldSerializerIfAvailable(TypeSerializerCreator.java:339)     at com.google.gwt.user.rebind.rpc.TypeSerializerCreator.createFieldSerializer(TypeSerializerCreator.java:271)     at com.google.gwt.user.rebind.rpc.TypeSerializerCreator.createFieldSerializers(TypeSerializerCreator.java:299)     at com.google.gwt.user.rebind.rpc.TypeSerializerCreator.realize(TypeSerializerCreator.java:200)     at net.zschech.gwt.comet.rebind.CometSerializerGenerator.generateIncrementally(CometSerializerGenerator.java:119)     at com.google.gwt.dev.javac.StandardGeneratorContext.runGeneratorIncrementally(StandardGeneratorContext.java:670)     at com.google.gwt.dev.cfg.RuleGenerateWith.realize(RuleGenerateWith.java:41)     at com.google.gwt.dev.shell.StandardRebindOracle$Rebinder.rebind(StandardRebindOracle.java:79)     at com.google.gwt.dev.shell.StandardRebindOracle.rebind(StandardRebindOracle.java:276)     at com.google.gwt.dev.shell.ShellModuleSpaceHost.rebind(ShellModuleSpaceHost.java:147)     at com.google.gwt.dev.shell.ModuleSpace.rebind(ModuleSpace.java:600)     at com.google.gwt.dev.shell.ModuleSpace.rebindAndCreate(ModuleSpace.java:470)     at com.google.gwt.dev.shell.GWTBridgeImpl.create(GWTBridgeImpl.java:49)     at com.google.gwt.core.shared.GWT.create(GWT.java:72)     at com.google.gwt.core.client.GWT.create(GWT.java:86)     at com.ril.vnoc.client.comet.JVOCCometClient.<clinit>(JVOCCometClient.java:33)     at com.ril.vnoc.client.application.login.LoginPresenter.createCometClient(LoginPresenter.java:98)     at com.ril.vnoc.client.application.login.LoginPresenter.access$2(LoginPresenter.java:97)     at com.ril.vnoc.client.application.login.LoginPresenter$1$1.onSuccess(LoginPresenter.java:84)     at com.ril.vnoc.client.application.login.LoginPresenter$1$1.onSuccess(LoginPresenter.java:1)     at com.gwtplatform.dispatch.client.DispatchCall.onExecuteSuccess(DispatchCall.java:157)     at com.gwtplatform.dispatch.rpc.client.RpcDispatchExecuteCall.access$1(RpcDispatchExecuteCall.java:1)     at com.gwtplatform.dispatch.rpc.client.RpcDispatchExecuteCall$1.onSuccess(RpcDispatchExecuteCall.java:60)     at com.gwtplatform.dispatch.rpc.client.RpcDispatchExecuteCall$1.onSuccess(RpcDispatchExecuteCall.java:1)     at com.google.gwt.user.client.rpc.impl.RequestCallbackAdapter.onResponseReceived(RequestCallbackAdapter.java:232)     at com.google.gwt.http.client.Request.fireOnResponseReceived(Request.java:259)     at com.google.gwt.http.client.RequestBuilder$1.onReadyStateChange(RequestBuilder.java:412)     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)     at java.lang.reflect.Method.invoke(Unknown Source)     at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)     at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)     at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)     at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:338)     at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:219)     at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136)     at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:576)     at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:284)     at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:91)     at com.google.gwt.core.client.impl.Impl.apply(Impl.java)     at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:347)     at sun.reflect.GeneratedMethodAccessor75.invoke(Unknown Source)     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)     at java.lang.reflect.Method.invoke(Unknown Source)     at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)     at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)     at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)     at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:293)     at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:547)     at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:364)     at java.lang.Thread.run(Unknown Source)