FULL PRODUCT VERSION :
java version "1.7.0_05"
Java(TM) SE Runtime Environment (build 1.7.0_05-b05)
Java HotSpot(TM) Client VM (build 23.1-b03, mixed mode)
Netbeans 7.1.2

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [Version 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
When I request any website with HttpUrlConnection, which sends an "Set-Cookie" header, this header is not retuned with
HttpUrlConnection.getHeaderFields(). This happens ony if I run the program as signed WebStart Application. When I start the program 'normal' all header fields are retuned as expected.

It has worked with JDK 6.X.

REGRESSION. Last worked in version 6u31

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the attached code as signed WebStart Application under Java 7.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Excecuted as normal Application:
null [HTTP/1.1 200 OK]
X-Frame-Options [SAMEORIGIN]
Transfer-Encoding [chunked]
Date [Tue, 26 Jun 2012 09:59:35 GMT]
P3P [CP="This is not a P3P policy! See http://www.google.com/support/accounts/bin/answer.py?hl=en&answer=151657 for more info."]
X-XSS-Protection [1; mode=block]
Expires [-1]
Set-Cookie [NID=61=ecJkGVIQMaJpax; expires=Wed, 26-Dec-2012 09:59:35 GMT; path=/; domain=.google.de; HttpOnly, PREF=ID=f51c6bed932ab134:FF=0:TM=1340704775:LM=1340704775:S=lu5r5YK94s5TBFGl; expires=Thu, 26-Jun-2014 09:59:35 GMT; path=/; domain=.google.de, NID=61=ecJkGVIQMaJpax3svYNOQpkv_--01nkmmgzR3gKIRqrKTOYznWG2SJPTlmNra-dNrvd-ppN5gSnK55kKFFLdbR84PHwAFB2B_8qlePTbmkvuNP7rxdxbmkq7walVhgry; expires=Wed, 26-Dec-2012 09:59:35 GMT; path=/; domain=.google.de; HttpOnly]
Content-Type [text/html; charset=ISO-8859-1]
Server [gws]
Cache-Control [private, max-age=0]
ACTUAL -
Excecuted as WebStart Application (The line with Set-Cookie.. is missing):

null [HTTP/1.1 200 OK]
X-Frame-Options [SAMEORIGIN]
Transfer-Encoding [chunked]
Date [Tue, 26 Jun 2012 10:03:10 GMT]
P3P [CP="This is not a P3P policy! See http://www.google.com/support/accounts/bin/answer.py?hl=en&answer=151657 for more info."]
X-XSS-Protection [1; mode=block]
Expires [-1]
Content-Type [text/html; charset=ISO-8859-1]
Server [gws]
Cache-Control [private, max-age=0]


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
    public static void main(String[] args) {
        try {
            URL url = new URL("http://www.google.de"); //Any Http Server that sends a Set-Cookie Header
            HttpURLConnection openConnection = (HttpURLConnection)url.openConnection();

            Map<String, List<String>> headerFields = openConnection.getHeaderFields();
            Set<Entry<String, List<String>>> entrySet = headerFields.entrySet();
            for (Entry<String, List<String>> e : entrySet) {
                System.out.printf("%s %s\r\n", e.getKey(), e.getValue());
            }
            String headerField = openConnection.getHeaderField("Set-Cookie"); //With WebStart headerField is null
        } catch (Exception ex) {
            System.out.println(ex.getMessage());
        }
    }
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
When I set the default CookieHandler to null the Set-Cookie header is returned even in WebStart mode.

CookieHandler.setDefault(null);