hello all,
Iam trying to pass a object of the class from server to client using RPC
mechanism.And the class which am using is a nested class.In which i have
properties of dashboard.
The class is not implementing Serializable interface.Is it necessary to
implement the Serializable interface?
Iam getting the following error:

SEVERE: Exception while dispatching incoming RPC call
com.google.gwt.user.client.rpc.SerializationException:
java.lang.reflect.InvocationTargetException
 at
com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serializeWithCustomSerializer(ServerSerializationStreamWriter.java:760)
 at
com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serializeImpl(ServerSerializationStreamWriter.java:723)
 at
com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serialize(ServerSerializationStreamWriter.java:612)
 at
com.google.gwt.user.client.rpc.impl.AbstractSerializationStreamWriter.writeObject(AbstractSerializationStreamWriter.java:129)
 at
com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter$ValueWriter$8.write(ServerSerializationStreamWriter.java:152)
 at
com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serializeValue(ServerSerializationStreamWriter.java:534)
 at com.google.gwt.user.server.rpc.RPC.encodeResponse(RPC.java:609)
 at
com.google.gwt.user.server.rpc.RPC.encodeResponseForSuccess(RPC.java:467)
 at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:564)
 at
com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:188)
 at
com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:224)
 at
com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
 at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
 at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
 at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
 at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
 at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
 at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
 at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
 at
org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:861)
 at
org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
 at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1584)
 at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.reflect.InvocationTargetException
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:597)
 at
com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serializeWithCustomSerializer(ServerSerializationStreamWriter.java:742)
 ... 25 more
Caused by: com.google.gwt.user.client.rpc.SerializationException: Type
'com.mycompany.project.server.Dashboard' was not included in the set of
types which can be serialized by this SerializationPolicy or its Class
object could not be loaded. For security purposes, this type will not be
serialized.: instance = com.mycompany.project.server.dashbo...@10ffb38
 at
com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serialize(ServerSerializationStreamWriter.java:610)
 at
com.google.gwt.user.client.rpc.impl.AbstractSerializationStreamWriter.writeObject(AbstractSerializationStreamWriter.java:129)
 at
com.google.gwt.user.client.rpc.core.java.util.Collection_CustomFieldSerializerBase.serialize(Collection_CustomFieldSerializerBase.java:43)
 at
com.google.gwt.user.client.rpc.core.java.util.ArrayList_CustomFieldSerializer.serialize(ArrayList_CustomFieldSerializer.java:36)
 ... 30 more




Or is there any other way by which i can implement it.(eg requestbuilder )

Plz guide me.
Regards
Jayalakshmi

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