NumberFormatException when trying to invoke service

Question

I get a client side error when trying to invoke the StockQuote web service on www.xmethods.com. The only changes I've made to the example client code (available at xmethods.com) is to handle proxies:
Call call = new Call ();
//set up the message to go through the proxy
SOAPHTTPConnection transport = new SOAPHTTPConnection();
transport.setProxyHost("proxy4");
transport.setProxyPort(80);
call.setSOAPTransport(transport);
try{
// Invoke the service ....
Response resp = call.invoke (url,"");
}catch(SOAPException soe){
System.out.println("Soap Exception");
soe.printStackTrace();
The SOAPException gets thrown by the invoke method and the following output occurs. Help.
Soap Exception
[SOAPException: faultCode=SOAP-ENV:Client; msg=3194  ; targetException=java.lang.NumberFormatException: 3
194  ]
at org.apache.soap.transport.http.SOAPHTTPConnection.send (SOAPHTTPConnection.java:324)
at org.apache.soap.rpc.Call.invoke(Call.java:205)
at stockquoteClient.getQuote(stockquoteClient.java:45)
at stockquoteClient.main(stockquoteClient.java:68)

Answer 1

This is just a guess, but in this code: Response resp = call.invoke (url,""); the second arg to "invoke" is declared as Object[], so should it be Response resp = call.invoke (url,null); or Response resp = call.invoke (url, new Object[1] {null});Mike