private void sendGet(String s,String t) throws Exception {
            DocumentBuilderFactory factory =
            DocumentBuilderFactory.newInstance();
            DocumentBuilder builder = factory.newDocumentBuilder();

    String url = "http://cis-linux2.temple.edu/~tud17750/bazaar/login.php?inputuName="+s+"?inputPassowrd="+t;

    URL obj = new URL(url);
    HttpURLConnection con = (HttpURLConnection) obj.openConnection();

    // optional default is GET
    con.setRequestMethod("GET");

    //add request header
    con.setRequestProperty("User-Agent", USER_AGENT);

    int responseCode = con.getResponseCode();
    System.out.println("nSending 'GET' request to URL : " + url);
    System.out.println("Response Code : " + responseCode);


            StringBuilder xmlStringBuilder = new StringBuilder();
    BufferedReader in = new BufferedReader(
            new InputStreamReader(con.getInputStream()));
    String inputLine;
    StringBuffer response = new StringBuffer();

    while ((inputLine = in.readLine()) != null) {
        xmlStringBuilder.append(inputLine);
    }
    in.close();
            ByteArrayInputStream input =  new ByteArrayInputStream(
            xmlStringBuilder.toString().getBytes("UTF-8"));

            Document doc = builder.parse(input);


            NodeList name =doc.getElementsByTagName("ID");
            System.out.println(name.item(0).getFirstChild().getTextContent());


}

<?php
session_start();
require_once("config.php");

print "Passed contants<br>";

print "Host=".DB_HOST." !!!!<br>";
print "Login=".DB_USER." !!!<br>";
print "Pswd=".DB_PASSWORD."!!!!<br>";
print "Schema=".DB_DATABASE."!!!<br>";

$link = mysqli_connect(DB_HOST, DB_USER, DB_PASSWORD, DB_DATABASE);
if (!$link) { die("DB connection failed".mysql_error()); }
print "Connect success <br>";
if (!$link) { die("Unable to select database");};
print "DB selected <br>";
$uName= $_POST["inputuName"];
$Paswd = $_POST["inputPassword"];

$query = "SELECT * from User WHERE userName='$uName' and Password= '$Paswd';";
$result = mysqli_query($link,$query);

if ($result)    {
    $_SESSION["Status"]=1;

} else{

    $_SESSION["Status"] = -1;
    die("Query failed".mysql_error());
}

?>

[Fatal Error] :1:1: Content is not allowed in prolog.
Exception in thread "main" org.xml.sax.SAXParseException; lineNumber: 1;
     columnNumber: 1; Content is not allowed in prolog.
at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:257)
at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:338)
at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:121)
at HttpURLConnectionExample.sendGet(HttpURLConnectionExample.java:69)
at HttpURLConnectionExample.main(HttpURLConnectionExample.java:29)