private void getToken(String url) {
        String accessToken = "";
        StringBuilder strBuild = new StringBuilder();

        String authURL = "https://login.ipleiria.pt/adfs/ls/?client-request-id=5d88995c-4405-40c7-985f-a02fd6d62749&username=&wa=wsignin1.0&wtrealm=urn%3afederation%3aMicrosoftOnline&wctx=estsredirect%3d2%26estsrequest%3drQIIAY2RO2_TUABGc-PEbaMKKsTAgEQHpEpI176-14_YEhLOw2mihDRJCWCBKtuxEzdObPzIa2Pr2IEBOiHElJEBIf4AUsXQqUN_QcWEmBgYaMTCBmc4-ubz3aM4hlPuoj9guDJEjsNBy16tvwhv5LaevTl6ni19efD64C17fr5TPQHXRnPGDTzbDV2DCeIluDOI4yBSWNZPYs_3h4zvOK5lM5Y_Yv2pwX4C4AyAZVoSiZiX8rKABUw4TLBAGCKKHI-wDEWMLMjjngMNCROICTIkx-Z4yxQv0tebahIP8Ep-6C7sH-kNxw9HB4EfxSfUK1Cy4kIpqvbL5UIb1RO-3PcXjXqnPjuM-b6gNatoaFZQ7XBSRxGJZTnUO2Iv6DWTmdgtVrwGP2sN1HGguhW3PVet3eFcm-JW-2k3atSQqor7Lyb8UINDSCJnz8vbu16Xx9CR9Xwy6xgjTeppiVM3ySNB79RMW-C6e3BJ_VfjDxR91Wnkj08p2g_ssds7y4BvmU1EKevrua3UrdR26mcGvMteffH-csreXtspvZzYvz5ufk2dZlm2bZS1_mLgdcbF_ccto2BOpPzDqDEvPklCvWvpbWLwXpUvmf37ROGOaXBM05c0-E6Do7XU541_fXeRu4kRJ0NEIMdtc0hBSBGw_hs1&RedirectToIdentityProvider=http%3a%2f%2flogin.ipleiria.pt%2fadfs%2fservices%2ftrust";
        String client_secret = "*******************";
        String redirect_uri = "urn:ietf:wg:oauth:2.0:oob";
        strBuild
                .append("&client_secret=").append(client_secret)
                .append("&redirect_uri=").append(redirect_uri);


        try{
            java.net.URL obj = new URL(authURL);

            HttpURLConnection con = (HttpURLConnection) obj.openConnection();
            con.setDoOutput(true);
            con.setRequestMethod("POST");

            con.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

            DataOutputStream wr = new DataOutputStream(con.getOutputStream());
            wr.writeBytes(strBuild.toString());
            wr.flush();
            wr.close();

            //OutputStreamWriter out = new OutputStreamWriter(con.getOutputStream());
            System.out.println(con.getResponseCode());
            System.out.println(con.getResponseMessage());

        }catch (Exception e)
        {
            System.out.println("Error.");
        }
        System.out.println(strBuild.toString());
    }