Java EE (Java Enterprise Edition) General Discussion

This are my codes on my jsp page for sending out an email.

 <%@ page language = "java"  import="java.lang.*,
java.util.*,
java.util.Date,
java.text.DateFormat,
java.text.SimpleDateFormat,
com.bgenie.bgenieData.genieObj.loginObj,
com.bgenie.bgenieData.genieObj.registerObj,
javax.mail.*,
javax.mail.internet.*,
javax.activation.*,
com.bgenie.bgenieData.bean.loginBean" %>


<%
    String host = "smtp.gmail.com";
	String port = "995";
    String to = "chongming@gmail.com";
    String from = "chongming.koh@gmail.com";
    String subject = "Test from JavaMail.";
    String messageText = "Hello from JavaMail!";
	String username = "xxx";
    String password = "xxx";

    boolean sessionDebug = true;

    Properties props = System.getProperties();
    //props.put("mail.host", host);
	props.put("mail.smtp.host", host);
    props.put("mail.smtp.port", port);
	props.put("mail.smtp.starttls.enable","true");
	props.put("mail.smtp.auth", "true");
	props.put("mail.smtp.socketFactory.port", port);
	props.put("mail.transport.protocol", "smtp");
	props.put("mail.debug", "true");


	
    //props.put("mail.transport.protocol", "smtp");
	//Authenticator auth = new Authenticator(username,password);

    Session mailSession = Session.getDefaultInstance(props);

    mailSession.setDebug(sessionDebug);
	
    Message msg = new MimeMessage(mailSession);

    msg.setFrom(new InternetAddress(from));
    InternetAddress[] address = {new InternetAddress(to)};
    msg.setRecipients(Message.RecipientType.TO, address);
    msg.setSubject(subject);
    msg.setSentDate(new Date());
    msg.setText(messageText);

    Transport.send(msg); 
	   
    out.println("Mail was sent to " + to);
    out.println(" from " + from);
    out.println(" using host " + host + ".");

%>
    </table>
  </body>
</html>

This is the error is shown.
javax.servlet.ServletException
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:848)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:781)
org.apache.jsp.sendMail2_jsp._jspService(org.apache.jsp.sendMail2_jsp:112)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)


root cause

javax.mail.AuthenticationFailedException
javax.mail.Service.connect(Service.java:306)
javax.mail.Service.connect(Service.java:156)
javax.mail.Service.connect(Service.java:105)
javax.mail.Transport.send0(Transport.java:168)
javax.mail.Transport.send(Transport.java:98)
org.apache.jsp.sendMail2_jsp._jspService(org.apache.jsp.sendMail2_jsp:96)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)

Can someone please guide me on how to solve this issue? thanks