Sending Mail Through Servlet

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import Db.databse;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.Date;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.Properties;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author Naveen&Jyoti
 */
@WebServlet(urlPatterns = {"/Register.action"})
public class Register extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
 


 
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try
        {
             Date dateNow;
            dateNow = new java.sql.Date(System.currentTimeMillis());
            String ref=request.getParameter("ref");
             String mailid=request.getParameter("mailid");
           
              String repassword=request.getParameter("repassword");
            databse db=new databse();
            Connection con=db.connectit();
            String sql="select * from register where mailid=?";
         
            PreparedStatement pste=con.prepareStatement(sql);
            pste.setString(1,request.getParameter("mailid"));
             ResultSet rs=pste.executeQuery();
             int count = 0;
             out.println(""+request.getParameter("mailid"));
               while(rs.next())
               {
                   count = count + 1;
               }
            if(count > 1)
            {
                out.println("<script>alert('Emailid Already Exists!');window.location='newuser/index.jsp';</script>");
            }
            else if(count==0)
            {
            PreparedStatement pst=con.prepareStatement("insert into register(registerid,mailid,password,status,date) values(?,?,?,?,?)");
            pst.setString(1, ref);
             pst.setString(2, mailid);
              pst.setString(3, repassword);
               pst.setString(4,"Active" );
               pst.setDate(5,dateNow);
               int i=pst.executeUpdate();
               if(i>0)
               {
           String emailContent = "Dear-'"+mailid+"'Thanks for registration in http://indiaswap.com \n Support Team \n indiaswap.com";
         
       
send();
     // sendMessage(smtpServ, to, from, subject, emailContent);

 
            out.println("<script>alert('Register Successfully');window.location='newuser/index.jsp';</script>");
               }
               else
               {
                   out.println("<script>alert('Some error');window.location='newuser/register.jsp';</script>");
                 
                 
                 
               }
            }
        }
        catch(Exception e)
        {
            System.out.println(e);
        }
    }

 
 
 
 
 public void send()
 {
       Properties props = new Properties();
    props.put("mail.smtp.user", "naveen.rajput11123@gmail.com");
    props.put("mail.smtp.host", "smtp.gmail.com");
    props.put("mail.smtp.port", "25");
    props.put("mail.debug", "true");
    props.put("mail.smtp.auth", "true");
    props.put("mail.smtp.starttls.enable", "true");
    props.put("mail.smtp.EnableSSL.enable", "true");
    props.setProperty("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
    props.setProperty("mail.smtp.socketFactory.fallbac k", "false");
    props.setProperty("mail.smtp.port", "465");
    props.setProperty("mail.smtp.socketFactory.port", "465");
    Session session = Session.getInstance(props,
            new javax.mail.Authenticator() {

                protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication("naveen.rajput11123@gmail.com", password);
                }
            });
    try {

        Message message = new MimeMessage(session);
        message.setFrom(new InternetAddress("naveen.rajput11123@gmail.com"));
        message.setRecipients(Message.RecipientType.TO,
                InternetAddress.parse("abh0288@gmail.com"));
        message.setSubject("Registartion Mail");
        message.setText("How are you");

        Transport.send(message);

        System.out.println("Done");

    } catch (Exception e) {


    }
 }
 
    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}