如何在Java中向两个不同的电子邮件地址发送两封电子邮件？

import java.util.Properties;
import javax.mail.*;
import javax.mail.internet.*;

public class EmailSender {
    public static void main(String[] args) {
        // 邮件服务器配置
        String host = "smtp.example.com";
        String username = "your_username";
        String password = "your_password";

        // 发件人和收件人信息
        String fromEmail = "sender@example.com";
        String toEmail1 = "recipient1@example.com";
        String toEmail2 = "recipient2@example.com";

        // 邮件内容
        String subject = "JavaMail Test";
        String body = "This is a test email sent from Java.";

        // 配置邮件服务器属性
        Properties props = new Properties();
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.starttls.enable", "true");
        props.put("mail.smtp.host", host);
        props.put("mail.smtp.port", "587");

        // 创建会话对象
        Session session = Session.getInstance(props, new Authenticator() {
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(username, password);
            }
        });

        try {
            // 创建邮件消息
            Message message1 = new MimeMessage(session);
            message1.setFrom(new InternetAddress(fromEmail));
            message1.setRecipients(Message.RecipientType.TO, InternetAddress.parse(toEmail1));
            message1.setSubject(subject);
            message1.setText(body);

            Message message2 = new MimeMessage(session);
            message2.setFrom(new InternetAddress(fromEmail));
            message2.setRecipients(Message.RecipientType.TO, InternetAddress.parse(toEmail2));
            message2.setSubject(subject);
            message2.setText(body);

            // 发送邮件
            Transport.send(message1);
            Transport.send(message2);

            System.out.println("Emails sent successfully.");
        } catch (MessagingException e) {
            e.printStackTrace();
        }
    }
}