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10.16.6. Oneway Invocations

@Oneway indicates that the given web method has only an input message and no output. Typically, a one-way method returns the thread of control to the calling application prior to executing the actual business method. 
@WebService (name="PingEndpoint")
@SOAPBinding(style = SOAPBinding.Style.RPC)
public class PingEndpointImpl
{
   private static String feedback;
   ...
   @WebMethod
   @Oneway
   public void ping()
   {
      log.info("ping");
      feedback = "ok";
   }
   ...
   @WebMethod
   public String feedback()
   {
   log.info("feedback");
   return feedback;
   }
}
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