import java.util.Properties;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import org.thymeleaf.TemplateEngine;
import org.thymeleaf.context.Context;
import org.thymeleaf.templateresolver.ClassLoaderTemplateResolver;
public class ThymeleafEmail {
  public static void main(String[] args) throws MessagingException {
    // Set mail properties
    Properties props = new Properties();
    props.put("mail.smtp.host", "smtp.gmail.com");
    props.put("mail.smtp.port", "587");
    props.put("mail.smtp.auth", "true");
    props.put("mail.smtp.starttls.enable", "true");
    // Get the Session object
    Session session = Session.getDefaultInstance(props);
    // Prepare the Thymeleaf template
    ClassLoaderTemplateResolver resolver = new ClassLoaderTemplateResolver();
    resolver.setTemplateMode("HTML");
    resolver.setSuffix(".html");
    TemplateEngine templateEngine = new TemplateEngine();
    templateEngine.setTemplateResolver(resolver);
    Context context = new Context();
    context.setVariable("name", "John Doe");
    String processedTemplate = templateEngine.process("email_template", context);
    // Create a message
    Message message = new MimeMessage(session);
    message.setFrom(new InternetAddress("from@example.com"));
    message.setRecipients(Message.RecipientType.TO, InternetAddress.parse("to@example.com"));
    message.setSubject("Test email with Thymeleaf template");
    message.setContent(processedTemplate, "text/html");
    // Send the message
    Transport.send(message);
    System.out.println("Email sent successfully!");
  }
}