SHA1 digest error for javax/mail/MessagingException

java.lang.SecurityException: SHA1 digest error for javax/mail/MessagingException.class
at sun.security.util.ManifestEntryVerifier.verify(ManifestEntryVerifier.java:194)
at java.util.jar.JarVerifier.processEntry(JarVerifier.java:201)
at java.util.jar.JarVerifier.update(JarVerifier.java:188)
at java.util.jar.JarVerifier$VerifierStream.read(JarVerifier.java:411)
at sun.misc.Resource.getBytes(Resource.java:97)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:256)
at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
Exception in thread "main"

What could be the problem for this Exception ???

Thanks and Regards.

can you post the code which is causing it?

Could be a problem with your implementation.

here is the code..........

import java.security.Security;
import java.util.Properties;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMessage.RecipientType;
 
import com.sun.org.apache.xerces.internal.parsers.IntegratedParserConfiguration;
 
 
public class SendEmail implements Runnable{

private String[] _emailRecipients;
private String _senderEmailAddress = "Arun";
private String _emailSubject = "Test Mail. ";
String color="green";
int size=2;;
private String _emailMessageText="" +
"<html><body>" +
"<font color=\"red\"> hi.......... </font>"+
"</body></html>";

public SendEmail(String... emailRecipients) {

_emailRecipients=emailRecipients;

}

public static void main(String[] args) {
String content="Hi Friends this is the test mail";
String[] str={"arun.407@gmail.com"};
new Thread(new SendEmail(str)).start();
}

public void run()
{
doProcess();
}

public void doProcess() {
if((_emailRecipients==null))
{
System.out.println("One of the String passed is null,all are mandatory");
}
else
try {
sendEmail(_emailRecipients);

}catch(Exception e) {

System.out.println(e);
}
}

private void sendEmail(String... _emailRecipientsList)
throws Exception{
try{
Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
 
//Adding required properties to send an email
Properties props = new Properties();
props.setProperty("mail.transport.protocol", "smtp");
 props.setProperty("mail.host", "smtp.gmail.com");
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.port", "465");
//props.put("mail.debug", "true");
props.put("mail.smtp.socketFactory.port", "465");
props.put("mail.smtp.socketFactory.class","javax.net.ssl.SSLSocketFactory");
props.put("mail.smtp.socketFactory.fallback", "false");

System.out.println("Added all properties ..........\n");

//Creating an session object
Session session = Session.getDefaultInstance(props, new Authenticate());
//session.setDebug(true);
 
//Creating an transport object
Transport transport = session.getTransport();
InternetAddress addressFrom = new InternetAddress(_senderEmailAddress);

MimeMessage message = new MimeMessage(session);
System.out.println("Created an mimemessage obj........\n");
/*InternetAddress[] _to=new InternetAddress[_emailRecipientsList.length];
for(int i=0;i<_emailRecipientsList.length;i++){
_to[i]=new InternetAddress(this._emailRecipientsList[i]);
}*/

InternetAddress[] to = new InternetAddress[_emailRecipientsList.length];

for(int i=0;i<_emailRecipientsList.length;i++)
{
to[i] = new InternetAddress(_emailRecipients[i]);
}

message.setFrom(addressFrom);
message.setSubject(_emailSubject);
message.setContent(_emailMessageText, "text/html");
message.setRecipients(RecipientType.TO, to);

System.out.println("Message obj ready to transport.....\n");

transport.connect();
transport.send(message);
transport.close();

System.out.print("Email Sent.........");

}catch(MessagingException me){
me.printStackTrace();
System.out.println("email not send because of "+me+" ...!!!!!");
}catch(Exception e){
e.printStackTrace();
System.out.println("email not send because of "+e+" ...!!!!!");
}
}

//Authenticating your username and password
class Authenticate extends javax.mail.Authenticator{
protected PasswordAuthentication getPasswordAuthentication(){
try{
return new PasswordAuthentication("username","password");
}catch(Exception ae){
System.out.println("Authentication Exception..!!"+ae);
return null;
}
}
}

/*
public String get_emailRecipients() {
return _emailRecipients;
}
 
public void set_emailRecipients(String recipients) {
_emailRecipients = recipients;
}
*/

}

[edit]Add code tags. CR[/edit]
[ July 04, 2008: Message edited by: Campbell Ritchie ]

Nothing is really jumping out at me as the problem. Of course I have never tried sending mail using TLS authentication so its possible that the problem is coming from there.

http://blogs.sun.com/apanicker/entry/java_code_for_smtp_server

Here is a little snippet of code which looks promising. Perhaps by running them side by side you will have some luck in finding your problem.

Just looking at it the only thing that really comes to mind is that the items you are putting in your props object are different than the example. It looks like you are not specifying mail.smtp.starttls.enable to be true.

Anyway hope this helps. If not someone else on here has probably done a send mail application using TLS and might be able to point out the exact problem where I cannot.

Good Luck

That looks a lot more complicated than the example in the JavaMail FAQ. Are you sure all those properties are really necessary?

Originally posted by Paul Clapham:
That looks a lot more complicated than the example in the JavaMail FAQ. Are you sure all those properties are really necessary?

Also, as I suspected earlier, more complicated than a beginner's question. We have another forum where Java mail is discussed, so I think I ought to move you there . . .