Error I can't quite figure out ...

[Michael Fecina]

I'm getting the following error when I try to call my web service from a client. I have a few methods availabe in the service, and those that return Objects which I have defined (for example, Product and ProductTree) give me this error.  When I create a client that calls methods that are void or return a String, things work fine.  Any ideas?   AxisFault  faultCode: {http://xml.apache.org/axis/}Server.userException  faultString: java.lang.reflect.InvocationTargetException  faultActor: null  faultDetail:         stackTrace: 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:324)         at org.apache.axis.providers.java.RPCProvider.invokeMethod(RPCProvider.java:372)         at org.apache.axis.providers.java.RPCProvider.processMessage(RPCProvider.java:292)         at org.apache.axis.providers.java.JavaProvider.invoke(JavaProvider.java:276)         at org.apache.axis.strategies.InvocationStrategy.visit(InvocationStrategy.java:71)         at org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:156)         at org.apache.axis.SimpleChain.invoke(SimpleChain.java:126)         at org.apache.axis.handlers.soap.SOAPService.invoke(SOAPService.java:437)         at org.apache.axis.server.AxisServer.invoke(AxisServer.java:316)         at org.apache.axis.transport.http.AxisServlet.doPost(AxisServlet.java:701)         at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)         at org.apache.axis.transport.http.AxisServletBase.service(AxisServletBase.java:335)         at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:260)         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)        at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2396)         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)         at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)        at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)         at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:405)         at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:380)         at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:508)         at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:533)         at java.lang.Thread.run(Thread.java:536) Caused by: java.lang.StackOverflowError         at groceryWebService1.ws.Gws1SoapBindingImpl.searchProductList(Gws1SoapBindingImpl.java:24)    <****NOTE:  THE ABOVE LINE IS REPEATED 1023 times****>   java.lang.reflect.InvocationTargetException         at org.apache.axis.message.SOAPFaultBuilder.endElement(SOAPFaultBuilder.java:135)         at org.apache.axis.encoding.DeserializationContextImpl.endElement(DeserializationContextImpl.java:942)         at org.apache.crimson.parser.Parser2.maybeElement(Parser2.java:1528)         at org.apache.crimson.parser.Parser2.content(Parser2.java:1779)         at org.apache.crimson.parser.Parser2.maybeElement(Parser2.java:1507)         at org.apache.crimson.parser.Parser2.content(Parser2.java:1779)         at org.apache.crimson.parser.Parser2.maybeElement(Parser2.java:1507)         at org.apache.crimson.parser.Parser2.parseInternal(Parser2.java:500)         at org.apache.crimson.parser.Parser2.parse(Parser2.java:305)         at org.apache.crimson.parser.XMLReaderImpl.parse(XMLReaderImpl.java:442)        at javax.xml.parsers.SAXParser.parse(SAXParser.java:345)         at org.apache.axis.encoding.DeserializationContextImpl.parse(DeserializationContextImpl.java:232)         at org.apache.axis.SOAPPart.getAsSOAPEnvelope(SOAPPart.java:546)         at org.apache.axis.Message.getSOAPEnvelope(Message.java:377)         at org.apache.axis.client.Call.invokeEngine(Call.java:2132)         at org.apache.axis.client.Call.invoke(Call.java:2102)         at org.apache.axis.client.Call.invoke(Call.java:1851)         at org.apache.axis.client.Call.invoke(Call.java:1777)         at org.apache.axis.client.Call.invoke(Call.java:1315)         at groceryWebService1.ws.Gws1SoapBindingStub.searchProductList(Gws1SoapBindingStub.java:160)         at groceryWebService1.GroceryWebServiceClient.main(GroceryWebServiceClient.java:19)