Sending an email from a java application

However i am still having problems...


I am running on Windows XP, i have copied the "mail.jar" and the "activation.jar" files into the folder
C:\WINDOWS\java\classes directory, i downloaded them. I got them from the JavaMail API 1.2 release and the JAVABEANS ACTIVATION FRAMEWORK respectively.

I then added the classpath to them in my Visual J++. I specified the paths as:
C:\WINDOWS\java\classes\mail.jar
C:\WINDOWS\java\classes\activation.jar

but i get an Exception in thread "main" java.lang.NoClassDefFoundError: javax/mail/Message

I am really struggling to realise what i have done wrong...
can anyone spot any error?

Or does anyone have any code for sending an email. I have been trying all day, if you have a class that would work, aswell as the method call or constructor to the class...if so i will award you with the pints
BillFogartyAsked:
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moduloConnect With a Mentor Commented:
Finalized as proposed

modulo

Community Support Moderator
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objectsCommented:
Not sure how the classpath works in J++.
In genberal though you should simply be able to put the jar files into your 'ext' directory(s) and they'll get picked up automatically.
Your ext directory(s) (you may have two one for jdk, and one for jre) will be in the JDK/JRE folder inside the lib folder.

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BillFogartyAuthor Commented:
ya i have the mail.jar and activation.jar in both directories....
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objectsCommented:
have you tried compiling/running from command line.
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coreyitCommented:
objects touched on this, but I believe that you'll want to be sure that jar files are in lib, not classes.

-corey
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objectsCommented:
> that jar files are in lib

They need to be in lib/ext, not lib.
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coreyitCommented:
Ah, true.
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msterjevCommented:
Add rt.jar (C:\Program Files\JavaSoft\JRE\1.3.1\lib\rt.jar)to the J++ classpath(also mail.jar and activation.jar from ext directory), and change the interpreter into the Options tab to be java.exe ( for example C:\jdk1.3.1\bin\java.exe).This would works!
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jose_tijoCommented:
Hi
  You have to put the jars (mail.jar & activation.jar) into the following directory

JAVA_HOME\jre\lib\ext\

Also following is the code to send email

You have to import the following

import javax.mail.*;
import javax.mail.event.*;
import javax.mail.internet.*;

/**Make Sure you are defining the variables correctly*/

/**Source Code*/

public static String sendMail() {
         Properties properties = new Properties();
         properties.put("mail.smtp.host", "<your smtp host>");
         properties.put("mail.from", "Sun Microystems");
         
         Session session = Session.getInstance(properties,null);
         
         try {
              Message message = new MimeMessage(session);
              int i=0;
              InternetAddress[] address = {new InternetAddress("<address here>")};
              message.setRecipients(Message.RecipientType.TO, address);
              message.setFrom(new InternetAddress("fromaddress@here.com"));
              message.setSubject("Hi");
              message.setContent(mail_Content, "text/html");
              transport = session.getTransport(address[0]);
                                       transport.connect();
                   transport.sendMessage(message,address);
                             }catch (Exception e) {
              System.out.println("Exception: " + e.toString());
              return "Error sending Mail";
          }
         return "Mail Successfully Send!";
    }


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Venci75Commented:
No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area that this question is:
PAQ'd and pts removed
Please leave any comments here within the next seven days.
 
PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER!
 
Venci75
EE Cleanup Volunteer
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