var oTable;
$(function(){
oTable = $('#data').dataTable({
    "sDom": 'TC<"clear">lfrtip',
    "processing": true,
    "serverSide": true,
    "bJQueryUI":true,
    "sPaginationType": "full_numbers",
    "ajax": {
            url: 'worldCheck',
            type: 'GET'
        },
(...)
   });
});

@WebServlet("/worldCheck")
public class worldCheck extends HttpServlet {
private static final long serialVersionUID = 1L;


protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    int rows;
    JSONObject obj = new JSONObject();
    JSONArray back = new JSONArray();
    try{
        Class.forName("com.mysql.jdbc.Driver");
        Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/check","****","****");
        Statement stmt = con.createStatement();
        ResultSet rs = stmt.executeQuery("SELECT UID,LastName,FirstName,BDay FROM worldCheck");
        ResultSetMetaData meta = rs.getMetaData();
        rows = meta.getColumnCount();

        while(rs.next())
        {
            JSONArray array = new JSONArray();
            array.put(rs.getString("UID"));
            array.put(rs.getString("LastName"));
            array.put(rs.getString("FirstName"));
            array.put(rs.getString("BDay"));
            back.put(array);
        }

        obj.put("data", back);
        obj.put("draw", 1);
        obj.put("recordsTotal", rows);
        obj.put("recordsFiltered", rows);
        response.setContentType("application/json");
        PrintWriter out = response.getWriter();
        out.print(obj);

        con.close();
    }catch(Exception e)
    {
        e.printStackTrace();
    }
}


protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    doGet(request, response);
}