title: JavaMail API : Username and Password not accepted (Gmail)
body: <p>I want to send email from my java application to gmail account I used the following code and javaMail API ,But Gmail not accepted username and password and exception thrown 
  Can anybody help me how can I fix this issue? </p>
  
  <p><strong>MailService.java</strong></p>
  
  <pre><code>public class MailService {
  
      String email;
      String content;
      public void sendMail(String email,String content)
      {
          this.email=email;
          this.content=content;
          // Recipient's email ID needs to be mentioned.
            String to = email;
  
            // Sender's email ID needs to be mentioned
            String from = senderemail@gmail.com;
            final String username = "myusername";//change accordingly
            final String password = "*******";//change accordingly
  
            // Assuming you are sending email through relay.jangosmtp.net
            String host = "smtp.gmail.com";
  
            Properties props = new Properties();
            props.put("mail.smtp.auth", "true");
            props.put("mail.smtp.starttls.enable", "true");
            props.put("mail.smtp.host", host);
            props.put("mail.smtp.port", "587");
  
            // Get the Session object.
            Session session = Session.getInstance(props,
               new javax.mail.Authenticator() {
                  protected PasswordAuthentication getPasswordAuthentication() {
                     return new PasswordAuthentication(username, password);
             }
               });
  
            try {
             // Create a default MimeMessage object.
             Message message = new MimeMessage(session);
  
             // Set From: header field of the header.
             message.setFrom(new InternetAddress(from));
  
             // Set To: header field of the header.
             message.setRecipients(Message.RecipientType.TO,
                     InternetAddress.parse(to));
  
             // Set Subject: header field
             message.setSubject("Did you get my message?");
  
             // Now set the actual message
             message.setText(content);
  
             // Send message
             Transport.send(message);
  
             System.out.println("Sent message successfully....");
  
            } catch (MessagingException e) {
               throw new RuntimeException(e);
            }
         }
      }
  </code></pre>