Loading data into an Applet

Hello all,

I'm having trouble making an applet load data.

I have a Java application that runs on my local machine that generates 10000 integers and saves them to a file using:

            FileOutputStream file = new FileOutputStream("demo.map");
            DataOutputStream out = new DataOutputStream(file);

            out.writeInt(map.MAP_WIDTH);
            out.writeInt(map.MAP_HEIGHT);

            etc...

This works fine.  The next Java program is an Applet (extends JApplet), that should load the data.  It works fine when running in AppletView on my local machine, however after uploading the classes and the data file (demo.map) to a server, my applet always crashes.

I've looked into the crash an found that the reason that it is crashing is because when reading back the data from demo.map, all the values are different from the saved ones.  Heres the applet code:

            URL source = new URL(getCodeBase(), "demo.map");
            DataInputStream in = new DataInputStream(source.openStream());

            map.MAP_WIDTH = in.readInt();
            map.MAP_HEIGHT = in.readInt();

I know that demo.map contains the correct data (I looked at it in a hex viewer) and yet this code is reading in different data!

I have tried uploading the data file as both a binary and an ASCII file in my WSFTP but the results are identical.

What is the problem?
Thanks for your help.