Send Email in Java Mail API using Gmail SMTP Server

To send email using java you must have mail server and user name and password to access the mail server. In this tutorial I used gmail SMTP server with SSL connection. You must add Java Mail API to your class path.

package jsupport.mail;

import java.util.Properties;
import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.Message.RecipientType;
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;

/**
 *
 * @author Java Srilankan Support - JSupport
 */
public class SendMail {
    
    public void sendMail(String m_from,String m_to,String m_subject,String m_body){

      try {

            m_properties     = new Properties();
            m_properties.put("mail.smtp.host", "smtp.gmail.com"); 
            m_properties.put("mail.smtp.socketFactory.port", "465");
            m_properties.put("mail.smtp.socketFactory.class","javax.net.ssl.SSLSocketFactory");
            m_properties.put("mail.smtp.auth", "true");
            m_properties.put("mail.smtp.port", "465");
            

            m_Session        =   Session.getDefaultInstance(m_properties,new Authenticator() {
                protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication("username","password"); // username and the password
                }

            });
            
            m_simpleMessage  =   new MimeMessage(m_Session);

            m_fromAddress    =   new InternetAddress(m_from);
            m_toAddress      =   new InternetAddress(m_to);


            m_simpleMessage.setFrom(m_fromAddress);
            m_simpleMessage.setRecipient(RecipientType.TO, m_toAddress);
            m_simpleMessage.setSubject(m_subject);
            m_simpleMessage.setContent(m_body,"text/plain");

            Transport.send(m_simpleMessage);

        } catch (MessagingException ex) {
            ex.printStackTrace();
        }
    }

    public static void main(String[] args) {

      SendMail send_mail    =   new SendMail();
      send_mail.sendMail("from-mail@gmail.com", "to-mail@gmail.com", "Test Mail", "Hi this is Test mail from Java Srilankan Support");
    }

    private Session m_Session;
    private Message m_simpleMessage;
    private InternetAddress m_fromAddress;
    private InternetAddress m_toAddress;
    private Properties m_properties;
}