import java.util.Random;
-import javax.mail.MessagingException;
-import javax.mail.Session;
-import javax.mail.internet.MimeMessage;
+import jakarta.mail.MessagingException;
+import jakarta.mail.Session;
+import jakarta.mail.internet.MimeMessage;
/**
* Message-Idヘッダがカスタマイズ可能なMimeMessageのサブクラス。
* 参考ページ<br>
* <a href="http://java.sun.com/products/javamail/FAQ.html#msgid">http://java.sun.com/products/javamail/FAQ.html#msgid</a>
*
- * @see javax.mail.internet.MimeMessage#updateHeaders()
+ * @see jakarta.mail.internet.MimeMessage#updateHeaders()
*/
protected void updateHeaders() throws MessagingException {
super.updateHeaders();