returning an array of java bean

[luca marano]

how can i write  a client accessing to a service returning an array of bean?   this is my relevant code:     String endpoint = "http://localhost:8080/axis/services/MessageService";       Service  service = new Service();     Call     call    = (Call) service.createCall();       call.setTargetEndpointAddress( new java.net.URL(endpoint) );     call.setOperationName(new QName("http://soapinterop.org/", "getResults"));     Pat p = new Pat("provapatid","provatitle");       QName returnQName = new QName("com.fwdco.wsbeans","Pat");     call.registerTypeMapping(Pat.class,returnQName,new BeanSerializerFactory(Pat.class,returnQName),new BeanDeserializerFactory(Pat.class,returnQName));     call.setReturnType(org.apache.axis.Constants.SOAP_ARRAY);     Pat[] ret = (Pat[]) call.invoke(new Object[] { "prova" });   and this is the occured errors:    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)   please reply me