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.
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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; }