Troubles connecting SQL Server

Question

I do following:
1. Create new web application.
2. Create package and add servlet.
3. Write following code into servlet method
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
String url = "jdbc:sun:sqlserver://WSSMN3839:1433";
String user = "????";
String pass = "????";
String res = "";
try {
Connection conn = DriverManager.getConnection(url, user, pass);
} catch (SQLException ex) {
res = "fail";
/* TODO output your page here */
Program goes to catch block although SQL Server driver installed and I can access DB through Runtime panel.
System.getProperty("jdbc.drivers") returns null too.

Answer 1

Check the permissions and server authentication from the below link,
http://technet.microsoft.com/en-us/library/ms179354(v=sql.90).aspx
Regards, RSingh