Jersey Client + set proxy

Hi I've a jersey client which i use to upload a file. I tried using it locally and everything works fine. But in production environment i've to set proxy. I browsed thru few pages but could not get exact solution. Can someone pls help me with this?

here is my client code:

File file = new File("e:\\test.zip");
FormDataMultiPart part = new FormDataMultiPart();
part.bodyPart(new FileDataBodyPart("file", file, MediaType.APPLICATION_OCTET_STREAM_TYPE));
WebResource resource = null;

if (proxy.equals("yes")) {
    // How do i configure client in this case?
} else {
    // this uses system proxy i guess
    resource = Client.create().resource(url);
}

String response = (String) resource.type(MediaType.MULTIPART_FORM_DATA_TYPE).post(String.class, part);
System.out.println(response);