SoapUI can send soap request, java xml cannot -

i have project whereby have make soap request endpoint. using soapui, request goes quite , receive response, when use java, receive following error:

com.sun.xml.internal.messaging.saaj.client.p2p.httpsoapconnection post severe: saaj0010: unable read response java.lang.nullpointerexception 

anyone know why so? here part call occurs:

inputstream = new bytearrayinputstream(message.getbytes("utf-8"));                 messagefactory factory = messagefactory.newinstance();                 soapmessage soapmsg = factory.createmessage(null, is);                 soapconnectionfactory connfactory = soapconnectionfactory.newinstance();                 soapconnection conn = connfactory.createconnection();                 url endpoint = new url(main.soap_end_point_testing);                 system.out.println(endpoint);                  soapmessage response = conn.call(soapmsg, endpoint); //right here error thrown 

the connection on plain http

try :

soapconnectionfactory soapconnectionfactory = soapconnectionfactory.newinstance(); soapconnection soapconnection = soapconnectionfactory.createconnection();  messagefactory messagefactory = messagefactory.newinstance(); soapmessage soapmessage = messagefactory.createmessage(); soappart soappart = soapmessage.getsoappart();  soapenvelope envelope = soappart.getenvelope(); 

you have create body here , save changes.

soapmessage.savechanges(); 

print request message

bytearrayoutputstream outrequest = new bytearrayoutputstream(); soapmessage.writeto(outrequest); string request=outrequest.tostring();  soapmessage soapresponse = soapconnection.call(soapmessage,url);