How to send mail using gmail in java

package com;

import java.util.Properties;
import javax.mail.*;
import javax.mail.internet.*;

public class SendMailSSL 
{
  public static void main(String[] args) 
  {

  String to="abc@abc.com";

  //Get the session object
  Properties props = new Properties();
  props.put("mail.smtp.host", "smtp.gmail.com");
  props.put("mail.smtp.socketFactory.port", "465");
  props.put("mail.smtp.socketFactory.class","javax.net.ssl.SSLSocketFactory");
  props.put("mail.smtp.auth", "true");
  props.put("mail.smtp.port", "465");
 
  
  Session session = Session.getDefaultInstance(props, new javax.mail.Authenticator() 
  {
   protected PasswordAuthentication getPasswordAuthentication() {
   return new PasswordAuthentication("abc@gmail.com","****");
   }
  });
 
  
  
  //compose message
  try 
  {
    MimeMessage message = new MimeMessage(session);
    message.setFrom(new InternetAddress("abc@gmail.com"));//change accordingly
    message.addRecipient(Message.RecipientType.TO,new InternetAddress(to));
    message.setSubject("Hello");
    message.setText("Testing.......");
   
    //send message
    Transport.send(message);

    System.out.println("message sent successfully");
  } catch (MessagingException e) {throw new RuntimeException(e);}
 }
}