Live Connect and Java

Question

Hi All,
I am a student working on my thesis which is is a Firefox exntension in which users can annotate(i.e. highlight) web content on any web site. I am using Liveconnect to connect javascript and java. All my methods work well, however I noticed an issue that crops up when I create a new instance of something.
The error I get is in the Java console:
Ignored exception: java.security.PrivilegedActionException: java.lang.reflect.InvocationTargetException
the above only occurs for example:
In my jar file I created a method to send an email:
Part of the method contains the following:
public static void main(String[] args) {
       smtp.connect();
       // login using gmail account details
       smtp.login(username,password);
       // create new email message
       EmailMessage message = new EmailMessage();
       message.setTo(to);
       message.setFrom(username);
} If I comment out EmailMessage message = new EmailMessage() everything works fine, however if not, nothing in the jar file seems to work.
could you please shed some light on this?
It is pretty urgent and any input is greatly appreciated
Kind regards
Chris

Answer 1

What is the best way to connect a Java application to
a remote MySQL server?JDBC.
I've tried JDBC already. It works great when the
MySQL server is running on the same machine that the
application is running on. However, when I specify
the IP and port of the remote database, I can't
connect.This usually happens because you haven't configured the security properly, or haven't understood how MySQL security works. It could be something else, though, based on the details you provided.
I suppose I could have specified the wrong port. How
can I get the port which the server is running on?Ask the person who set up the server. Or run netstat on the server if it's an orphaned system.
If I am able to do this connection, are there any
major security risks? Is there a better way to link
an application to a remote database?Security risks? For the server or your program?