How to Send Free SMS using Java? [With Source Code]

-drag and drop 4 Lebel named: phone no, gmail, password, message
-drag and drop 2 TextField for phone no and gmail
-drag and dropPassword Field for gmail password
-drag and drop TextArea for message
drag and drop one Button



Write the following code by double clicking the button.

code:
Import following library

import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;
import javax.mail.internet.MimeMessage;
import javax.swing.JOptionPane;
try{
           String host = "smtp.gmail.com";
           String user = txtGmail.getText();
           String pss = txtPass.getText();
           String to = txtPhone.getText();
           String from = user;
           String subject = "Message";
           String message = txtMessage.getText();
           boolean sessionDebug = false;
           Properties pros = System.getProperties();
           pros.put("mail.smtp.starttls.enable", "tue");
           pros.put("mail.smtp.host", "host");
           pros.put("mail.smtp.auth","true");
           pros.put("mail.smtp.port","587");
           pros.put("mail.smtp.starttls.required","true");
           java.security.Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
           Session mailSession = Session.getDefaultInstance(pros,null);
           mailSession.setDebug(sessionDebug);
           Message msg = new MimeMessage(mailSession);
           msg.setFrom(new InternetAddress(from));
           InternetAddress [] address ={new InternetAddress(to)};
           msg.setRecipients(Message.RecipientType.TO, address);
           msg.setSubject(subject);
           msg.setSentDate(new Date());
           msg.setText(message);
           Transport transport = mailSession.getTransport("smtp");
           transport.connect(host, user, pss);
           transport.sendMessage(msg, msg.getAllRecipients());
           transport.close();
           JOptionPane.showMessageDialog(null,"message send successfully");
          
       }
       catch(Exception ex){
           JOptionPane.showMessageDialog(null, ex);
       }


for more information on how to add mail.jar file and activation.jar file you must watch the following video: