Javax.mail.jar

javax.mail.jar is a Java library that provides a Java API for sending and receiving email messages. It is part of the Java Standard Edition (SE) and is included in the Java Development Kit (JDK).

The javax.mail package provides a set of classes and interfaces that allow developers to create, send, and receive email messages using the Simple Mail Transfer Protocol (SMTP), Post Office Protocol (POP3), and Internet Message Access Protocol (IMAP).

Here are some of the key features of the javax.mail package:

1. Sending email: The javax.mail package provides classes for creating and sending email messages, including attachments and HTML content.
2. Receiving email: The package provides classes for retrieving email messages from POP3 and IMAP servers.
3. Email message parsing: The package includes classes for parsing email messages, including parsing headers, bodies, and attachments.
4. Email address validation: The package includes classes for validating email addresses.

To use the javax.mail package in your Java application, you need to include the javax.mail.jar file in your project's classpath. You can download the javax.mail.jar file from the Oracle website or include it in your project using a build tool like Maven or Gradle.

Here is an example of how to use the javax.mail package to send an email:

import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

public class SendEmail {
    public static void main(String[] args) {
        // Create a session
        Session session = Session.getDefaultInstance(new Properties(), null);

        // Create a message
        MimeMessage message = new MimeMessage(session);
        message.setFrom(new InternetAddress("[email protected]"));
        message.setRecipient(Message.RecipientType.TO, new InternetAddress("[email protected]"));
        message.setSubject("Test email");
        message.setText("This is a test email");

        // Send the message
        Transport.send(message);
    }
}

In this example, we create a Session object using the Session.getDefaultInstance() method, which returns a Session object that is used to send and receive email messages. We then create a MimeMessage object and set its properties, such as the sender, recipient, subject, and body. Finally, we use the Transport.send() method to send the message.