BAEL-4567 (#10007)

* BAEL-4567

BAEL-4567

* Add files via upload

* Add files via upload

* Delete SendMailWithAttachment.java

* Update pom.xml

* Formatting fixes

core-java-modules/core-java-networking-2/src/main/java/com/baeldung/mail/mailwithattachment/MailWithAttachmentService.java

@@ -0,0 +1,83 @@
+package com.baeldung.mail.mailwithattachment;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.Properties;
+import javax.mail.BodyPart;
+import javax.mail.Message;
+import javax.mail.MessagingException;
+import javax.mail.Multipart;
+import javax.mail.PasswordAuthentication;
+import javax.mail.Session;
+import javax.mail.Transport;
+import javax.mail.internet.AddressException;
+import javax.mail.internet.InternetAddress;
+import javax.mail.internet.MimeBodyPart;
+import javax.mail.internet.MimeMessage;
+import javax.mail.internet.MimeMultipart;
+
+public class MailWithAttachmentService {
+
+    private String username = "";
+    private String password = "";
+    private String host = "";
+    private String port = "";
+
+    MailWithAttachmentService() {
+    }
+
+    MailWithAttachmentService(String username, String password, String host, String port) {
+        this.username = username;
+        this.password = password;
+        this.host = host;
+        this.port = port;
+    }
+
+    public Session getSession() {
+        Properties props = new Properties();
+        props.put("mail.smtp.auth", "true");
+        props.put("mail.smtp.starttls.enable", "true");
+        props.put("mail.smtp.host", this.host);
+        props.put("mail.smtp.port", this.port);
+
+        Session session = Session.getInstance(props, new javax.mail.Authenticator() {
+            protected PasswordAuthentication getPasswordAuthentication() {
+                return new PasswordAuthentication(username, password);
+            }
+        });
+        return session;
+    }
+
+    public Message createMail(Session session) throws AddressException, MessagingException, IOException {
+        Message message = new MimeMessage(session);
+        message.setFrom(new InternetAddress("mail@gmail.com"));
+        message.setRecipients(Message.RecipientType.TO, InternetAddress.parse("mail@gmail.com"));
+        message.setSubject("Testing Subject");
+
+        BodyPart messageBodyPart = new MimeBodyPart();
+        messageBodyPart.setText("This is message body");
+
+        Multipart multipart = new MimeMultipart();
+        multipart.addBodyPart(messageBodyPart);
+
+        MimeBodyPart attachmentPart = new MimeBodyPart();
+        MimeBodyPart attachmentPart2 = new MimeBodyPart();
+
+        attachmentPart.attachFile(new File("C:\\Document1.txt"));
+        attachmentPart2.attachFile(new File("C:\\Document2.txt"));
+
+        multipart.addBodyPart(attachmentPart);
+        multipart.addBodyPart(attachmentPart2);
+
+        message.setContent(multipart);
+
+        return message;
+    }
+
+    public void sendMail(Session session) throws MessagingException, IOException {
+
+        Message message = createMail(session);
+        Transport.send(message);
+    }
+
+}