The Javamail API JAR framework technology in the Java class library

Javamail API JAR framework technical analysis in the Java class library Introduction: The Javamail API is the basic library used to send and receive emails on the Java platform.The Javamail API provides a set of functional class and interfaces that enable developers to easily send emails through the Java program.This article will analyze the Javamail API JAR framework, introduce its functions and usage, and provide some Java code examples. Javamail API JAR framework: The Javamail API JAR framework is the core component of the Javamail API.It contains all necessary classes and interfaces for creating, sending and receiving emails.To use the Javamail API JAR framework, you need to download and add it to the class path of the Java project. Javamail API core library: The Javamail API JAR framework provides a set of core libraries to create and configure email messages, connect mail servers and send emails.Here are some commonly used core categories and interfaces: 1. Session class: The Session class is one of the main classes in the Javamail API.It is used to create and configure email sessions and provide communication with the mail server.You can use the GetInstance method of the Session class to obtain a Session instance. Example code: Properties props = new Properties(); props.put("mail.smtp.host", "smtp.example.com"); props.put("mail.smtp.port", "25"); Session session = Session.getInstance(props); 2. MESSAGE class: MESSAGE class is used to represent email messages.You can use instances of the MESSAGE class to set up message attributes such as senders, recipients, themes, and text. Example code: Message message = new MimeMessage(session); message.setFrom(new InternetAddress("sender@example.com")); message.setRecipients(Message.RecipientType.TO, InternetAddress.parse("recipient@example.com")); message.setSubject("Hello, World!"); message.setText("This is a sample email message."); 3. Transport class: The Transport class is used to connect to the mail server and send email.You can send emails using the send method of the Transport class. Example code: Transport.send(message); 4. Store class: The Store class is used to connect to the mail server and receive the email.You can use the Store class to get the email folder and use the folder's getMessage method to get the mail. Example code: Store store = session.getStore("pop3"); store.connect("pop.example.com", "username", "password"); Folder inbox = store.getFolder("INBOX"); Message[] messages = inbox.getMessages(); Summarize: The Javamail API JAR framework is a basic library sent and received emails on the Java platform.This article analyzed the Javamail API JAR framework, introduced its commonly used core categories and interfaces, and provided some Java code examples.I hope this article will help you understand and use the Javamail API.