Getting error while sending mail through javamail api

Question

I can able to compile the following code successfully but while executing it showing the error
C:\Program Files\Java\javamail-1.4\demo>java msgsend -o [email protected] -M 203.112.158.188 [email protected]
Exception in thread "main" java.lang.NoClassDefFoundError: msgsend
import java.io.*;
import java.net.InetAddress;
import java.util.Properties;
import java.util.Date;
import javax.mail.*;
import javax.mail.internet.*;
public class msgsend {
public static void main(String[] argv) {
     String to, subject = null, from = null,
          cc = null, bcc = null, url = null;
     String mailhost = "null";
     String mailer = "msgsend";
     String file = null;
     String protocol = null, host = null, user = null, password = null;
     String record = null;     // name of folder in which to record mail
     boolean debug = false;
     BufferedReader in =
               new BufferedReader(new InputStreamReader(System.in));
     int optind;
     for (optind = 0; optind < argv.length; optind++) {
     if (argv[optind].equals("-T")) {
          protocol = argv[++optind];
     } else if (argv[optind].equals("-H")) {
          host = argv[++optind];
     } else if (argv[optind].equals("-U")) {
          user = argv[++optind];
     } else if (argv[optind].equals("-P")) {
          password = argv[++optind];
     } else if (argv[optind].equals("-M")) {
          mailhost = argv[++optind];
     } else if (argv[optind].equals("-f")) {
          record = argv[++optind];
     } else if (argv[optind].equals("-a")) {
          file = argv[++optind];
     } else if (argv[optind].equals("-s")) {
          subject = argv[++optind];
     } else if (argv[optind].equals("-o")) { // originator
          from = argv[++optind];
     } else if (argv[optind].equals("-c")) {
          cc = argv[++optind];
     } else if (argv[optind].equals("-b")) {
          bcc = argv[++optind];
     } else if (argv[optind].equals("-L")) {
          url = argv[++optind];
     } else if (argv[optind].equals("-d")) {
          debug = true;
     } else if (argv[optind].equals("--")) {
          optind++;
          break;
     } else if (argv[optind].startsWith("-")) {
          System.out.println(
"Usage: msgsend [[-L store-url] | [-T prot] [-H host] [-U user] [-P passwd]]");
          System.out.println(
"\t[-s subject] [-o from-address] [-c cc-addresses] [-b bcc-addresses]");
          System.out.println(
"\t[-f record-mailbox] [-M transport-host] [-a attach-file] [-d] [address]");
          System.exit(1);
     } else {
          break;
     try {
     if (optind < argv.length) {
          // XXX - concatenate all remaining arguments
          to = argv[optind];
          System.out.println("To: " + to);
     } else {
          System.out.print("To: ");
          System.out.flush();
          to = in.readLine();
     if (subject == null) {
          System.out.print("Subject: ");
          System.out.flush();
          subject = in.readLine();
     } else {
          System.out.println("Subject: " + subject);
     Properties props = System.getProperties();
     // XXX - could use Session.getTransport() and Transport.connect()
     // XXX - assume we're using SMTP
     if (mailhost != null)
          props.put("mail.smtp.host", mailhost);
     // Get a Session object
     Session session = Session.getInstance(props, null);
     if (debug)
          session.setDebug(true);
     // construct the message
     Message msg = new MimeMessage(session);
     if (from != null)
          msg.setFrom(new InternetAddress(from));
     else
          msg.setFrom();
     msg.setRecipients(Message.RecipientType.TO,
                         InternetAddress.parse(to, false));
     if (cc != null)
          msg.setRecipients(Message.RecipientType.CC,
                         InternetAddress.parse(cc, false));
     if (bcc != null)
          msg.setRecipients(Message.RecipientType.BCC,
                         InternetAddress.parse(bcc, false));
     msg.setSubject(subject);
     String text = collect(in);
     if (file != null) {
          // Attach the specified file.
          // We need a multipart message to hold the attachment.
          MimeBodyPart mbp1 = new MimeBodyPart();
          mbp1.setText(text);
          MimeBodyPart mbp2 = new MimeBodyPart();
          mbp2.attachFile(file);
          MimeMultipart mp = new MimeMultipart();
          mp.addBodyPart(mbp1);
          mp.addBodyPart(mbp2);
          msg.setContent(mp);
     } else {
          // If the desired charset is known, you can use
          // setText(text, charset)
          msg.setText(text);
     msg.setHeader("X-Mailer", mailer);
     msg.setSentDate(new Date());
     // send the thing off
     Transport.send(msg);
     System.out.println("\nMail was sent successfully.");
     // Keep a copy, if requested.
     if (record != null) {
          // Get a Store object
          Store store = null;
          if (url != null) {
          URLName urln = new URLName(url);
          store = session.getStore(urln);
          store.connect();
          } else {
          if (protocol != null)          
               store = session.getStore(protocol);
          else
               store = session.getStore();
          // Connect
          if (host != null || user != null || password != null)
               store.connect(host, user, password);
          else
               store.connect();
          // Get record Folder. Create if it does not exist.
          Folder folder = store.getFolder(record);
          if (folder == null) {
          System.err.println("Can't get record folder.");
          System.exit(1);
          if (!folder.exists())
          folder.create(Folder.HOLDS_MESSAGES);
          Message[] msgs = new Message[1];
          msgs[0] = msg;
          folder.appendMessages(msgs);
          System.out.println("Mail was recorded successfully.");
     } catch (Exception e) {
     e.printStackTrace();
public static String collect(BufferedReader in) throws IOException {
     String line;
     StringBuffer sb = new StringBuffer();
     while ((line = in.readLine()) != null) {
     sb.append(line);
     sb.append("\n");
     return sb.toString();
So please help me to resolve that error.

Answer 1

The directory that contains msgsend.class (usually the current directory)
is not in your CLASSPATH setting. Be sure that "." is included as one of the
entries in CLASSPATH.