Get attachments from a SOAP response using java code generated by SOAPUI

I used a .wsdl file in SOAPUI to generate java code based on JAX-WS 2.0. The Retrieve action works fine but when there are attachments in the response, i only can get the files in SOAPUI, tab attachments.

My question is how to get the file content by java JAX-WS 2.0, maybe i need to mark some kind of option in SOAPUI to generate code to get the attachment file content?