Java storing emails

intellix · 3 Apr 2009 at 15:50

Hey, making a client/server Java app for uni and I'm wondering what the best way to store private messages would be...

User puts in a recipient, subject, body and time need to be stored...

The data storage method needs to be dynamic sooo... not an array as I originally thought... but perhaps a vector but can these be multidimensional?

Can ArrayList be multidimensional? and if so, needs to be synchronised too (if its possible)

Any advice is great, thanks

brainchylde · 3 Apr 2009 at 18:11

Why not create a message class and then have an array of messages?

Or even, a message class and a messageCollection class..

EvilOne · 3 Apr 2009 at 18:35

Can you use a text file/database ?

DireEmblem · 3 Apr 2009 at 20:09

have a link to an SQL database?

intellix · 4 Apr 2009 at 13:29

I think linking to an SQL database is a little overkill for such as a simple assignment where we won't receive credit for advanced stuff anyways (as the tutor sucks at Java himself)... I did try storing things in a vector but it gets cleared when the user connects to the server again :S Was gonna try put it in a seperate class... although I'm not really sure why it doesn't work atm or why it would in a class...

DireEmblem · 4 Apr 2009 at 16:45

Create your own textfile that records messages sent/received much like messenger does?

intellix · 4 Apr 2009 at 20:06

managed it in the end, made the vector static soo its static on the server..

Got another problem though...
This seems to work once always, then when you try again it randomly either works or it doesn't :S I'm not quite sure if its a problem on client or server side though

On the client:
ObjectOutputStream output = new ObjectOutputStream(connection.getOutputStream());
output.writeObject(sendmail);
output.flush();

On the server:
System.out.println("email adding"); // This always works
ObjectInputStream input = new ObjectInputStream(connection.getInputStream() );
System.out.println("email adding"); //This works only when the ObjectInputStream thing works

numnutz · 5 Apr 2009 at 10:11

I'd tackle this with an embedded object databseq. For Java stuff I use db40 give it a google

Super simple i.e db40.storeSomeObject(Object obj) db40.getSomeObject(String name)