Problem sending an email, please take a look!!

Question

Hello!
I wuld like to know why I'm getting the following exception
everytime i try to send an email from a servlet with the classes below:
package radio.email;
import java.io.BufferedReader;
import java.io.File;
import java.io.InputStreamReader;
import java.util.Date;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.Store;
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;
import radio.email.SMTPAuthenticator;
public class SendEmail {
     public void send(String smtpHost, String smtpPort, String smtpUser, String passWord, String from,
String[] to, String subject, String content, File[] attachsFile )throws MessagingException, AddressException {
          try{
               //Create a mail session
               Properties props = new Properties();
               props.put("mail.smtp.host", smtpHost);
               props.put("mail.smtp.port", "" + smtpPort);
               props.put("mail.smtp.auth", "true");
               SMTPAuthenticator auth = new SMTPAuthenticator( smtpUser, passWord );
               //Session session = Session.getDefaultInstance(props, auth);
               Session session = Session.getInstance(props, auth);
session.setDebug(true);
               // Construct the message
               Message msg = new MimeMessage(session);
               msg.setSentDate( new Date() );
               msg.setFrom(new InternetAddress(from));
               InternetAddress[] addressTo = new InternetAddress[to.length];
               for (int i = 0; i < to.length; i++) {
                    addressTo[i] = new InternetAddress( to[i] );
               msg.setRecipients(Message.RecipientType.TO, addressTo);
               msg.setSubject(subject);
               msg.setHeader("Disposition-Notification-To", from);
               // create the message part
          MimeBodyPart messageBodyPart = new MimeBodyPart();
          //fill message
          messageBodyPart.setContent( content, "text/plain");
          Multipart multipart = new MimeMultipart();
          multipart.addBodyPart(messageBodyPart);
          if ( attachsFile != null && attachsFile[0] != null ){
               for ( int i = 0; i < attachsFile.length; i++ ){
                    messageBodyPart = new MimeBodyPart();
                    DataSource source = null;
                    source = new FileDataSource( attachsFile[i] );
                    messageBodyPart.setDataHandler( new DataHandler(source) );
                    messageBodyPart.setFileName( source.getName() );
                    multipart.addBodyPart(messageBodyPart);
          //set the content
          msg.setContent( multipart );
               // Send the message
               Transport.send(msg);
          }catch( Exception e ) {
               e.printStackTrace();
               //throw new SacException();
My servlet
new radio.email.SendEmail().send("smtp.mail.yahoo.com.br", "587", "myuser", "xxxxxx",
"Marcos", to, "Web R�dio Contato", content, null);
The Exception:
exception
javax.servlet.ServletException: Servlet execution threw an exception
     org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:362)
     com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:322)
     com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:130)
     com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87)
     com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
     com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117)
     javax.faces.webapp.FacesServlet.service(FacesServlet.java:198)
     org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:362)
root cause
java.lang.NoClassDefFoundError: javax/activation/DataSource
     radio.servlets.SendEmailServlet.processRequest(SendEmailServlet.java:54)
     radio.servlets.SendEmailServlet.doGet(SendEmailServlet.java:121)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:362)
     com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:322)
     com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:130)
     com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87)
     com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
     com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117)
     javax.faces.webapp.FacesServlet.service(FacesServlet.java:198)
     org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:362)
I have set the enviroment variables this way:
NAME = CLASSPATH
VALUE= C:\PATH\TO\mail.jar;C:\PATH\TO\javaee.jar
I have put the mail.jar and javaee.jar files in the Tomcat lib directory.
So I'm still having trouble, I get the same exception, then if you have any tip
please, post me. Thanks !

Answer 1

Did you restart the server after making these changes?
You probably want activation.jar instead of javaee.jar.