Authorization problem via ALM API in java 401 Unauthorized

Hello,

I'm having this problem to Authorized my app via java,

I'm using QC 11, rest API, java(1.7) and windows 64 bit.

My code is looking like that :

Java Code

CookieManager cm = new CookieManager();

URL url = new URL("http://"+ALMServer+"/qcbin/rest/is-authenticated");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
conn.setRequestProperty("Accept", "application/json");
conn.connect();

conn.getResponseCode();

url = new URL("http://"+ALMServer+"/qcbin/authentication-point/login.jsp?redirect url=http://"+ALMServer+"/qcbin/start_a.jsp");//myUiResource.jsp" );
conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
conn.setRequestProperty("Accept", "application/json");

cm.setCookies(conn);
if(conn.getResponseMessage()!=null) {
    System.out.println(conn.getResponseMessage());
    System.out.println(conn.getResponseCode());
    System.out.println(conn.getHeaderFields());
}

url = new URL("http://"+ALMServer+"/qcbin/rest/domains/"+DOMAIN_NAME+"/projects/"+PROJECT_NAME+"/defects");//myUiResource.jsp" );
conn = (HttpURLConnection) url.openConnection();
cm.setCookies(conn);
conn.setRequestMethod("GET");
conn.setRequestProperty("Accept", "application/xml");
conn.setRequestProperty("Content-Type", "application/xml");
if(conn.getResponseMessage()!=null) {
    System.out.println(conn.getResponseMessage());
    System.out.println(conn.getResponseCode());
    System.out.println(conn.getHeaderFields());
}

url = new URL("http://"+ALMServer+"/qcbin/authentication-point/authenticate");
conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("POST");

conn.setRequestProperty("Authorization", USER+" "+PASSWORD);

cm.setCookies(conn);
System.out.println(conn.getResponseMessage());
System.out.println(conn.getResponseCode());
System.out.println(conn.getHeaderFields());

this is the output :

OK
200
{null=[HTTP/1.1 200 OK], Date=[Mon, 01 Jul 2013 12:53:25 GMT], Content-Length=[7227], Content-Type=[text/html;charset=ISO-8859-1], X-Powered-By=[Servlet 2.5; JBoss-5.0/JBossWeb-2.1], Server=[Apache-Coyote/1.1]}
Unauthorized
401
{null=[HTTP/1.1 401 Unauthorized], WWW-Authenticate=[LWSSO realm="http://qc11:8080/qcbin/authentication-point"], Date=[Mon, 01 Jul 2013 12:53:25 GMT], Content-Length=[1319], Content-Type=[text/html;charset=utf-8], X-Powered-By=[Servlet 2.5; JBoss-5.0/JBossWeb-2.1], Server=[Apache-Coyote/1.1]}
This is the important answer!!!
Unauthorized
401
{null=[HTTP/1.1 401 Unauthorized], WWW-Authenticate=[Basic realm="Please enter your ALM user credentials"], Date=[Mon, 01 Jul 2013 12:53:25 GMT], Content-Length=[1133], Content-Type=[text/html;charset=utf-8], X-Powered-By=[Servlet 2.5; JBoss-5.0/JBossWeb-2.1], Server=[Apache-Coyote/1.1]}

Why am I still  : 401 Unauthorized

Thanks,

Or