Sending mail from Java

This is a simple java class 4 sending mail


import java.util.Properties;

import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.Message.RecipientType;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

public class SendMail {

 private String from;
 private String to;
 private String subject;
 private String text;
 
 public SendMail(String from, String to, String subject, String text){
  this.from = from;
  this.to = to;
  this.subject = subject;
  this.text = text;
 }
 
 public void send(){
  
  Properties properties = new Properties();
  properties .put("mail.smtp.host", "smtp.gmail.com"); // host and smtp settings
  properties .put("mail.smtp.port", "465"); // port settins
  
  Session mailSession = Session.getDefaultInstance(properties);
  Message simpleMessage = new MimeMessage(mailSession);
  
  InternetAddress fromAddress = null;
  InternetAddress toAddress = null;
  try {
   fromAddress = new InternetAddress(from);
   toAddress = new InternetAddress(to);
  } catch (AddressException e) {
          e.printStackTrace();
  }
  
  try {
   simpleMessage.setFrom(fromAddress);
   simpleMessage.setRecipient(RecipientType.TO, toAddress);
   simpleMessage.setSubject(subject);
   simpleMessage.setText(text);
   
   Transport.send(simpleMessage);   
  } catch (MessagingException e) {
   e.printStackTrace();
  }  
 }
}

Test Class

public class SendMailTest {

 public static void main(String[] args) {
  
  String from = "xxx@gmail.com";
  String to = "yyy@gmail.com";
  String subject = "Test";
  String message = "A newmessage";
  
  SendMail sendMail = new SendMail(from, to, subject, message);
  sendMail.send();
 }
}