Applet read/write files

Hi,
I have a problem to use getCodeBase to get the URL. Actually, I am pretty confused on running the applet in our intranet.
Let me explain my problem here, I have mapped a network drive(G:\personA) in my machine and my applet and all the files are in G:\personA\classes. In my coding, I have tried to specify my files paths such as G:\personA\classes\index.txt and I can run the applet without any problem either with Eclipse or from a web site http://personA//report.html. But the other members in this company cannot run this applet thro' this web site( http://personA//report.html). The problem is "No class found", can't find the path G:\personA\classes\index.txt.
So I decided to change my code by reading/writing files thro URL i,e : http://personA/classes, but when I run my applet, I got the following exception :
ava.lang.NullPointerException
     at java.applet.Applet.getCodeBase(Applet.java:136)
     at web.MyChart.readAndPrintData(MyChart.java:336)
     at web.MyChart<init>(MyChart.java:113)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
     at java.lang.reflect.Constructor.newInstance(Constructor.java:274)
     at java.lang.Class.newInstance0(Class.java:308)
     at java.lang.Class.newInstance(Class.java:261)
     at sun.applet.AppletPanel.createApplet(AppletPanel.java:617)
     at sun.applet.AppletPanel.runLoader(AppletPanel.java:546)
     at sun.applet.AppletPanel.run(AppletPanel.java:298)
     at java.lang.Thread.run(Thread.java:534)
does anybody knows how to solve this problem?? Please...
Thanks,
Tiffany

I think a trace would help, guessing is fun but won't solve your problem:
To turn the full trace on (windows) you can start the java console, to be found here:
C:\Program Files\Java\j2re1.4...\bin\jpicpl32.exe
In the advanced tab you can fill in something for runtime parameters fill in this:
-Djavaplugin.trace=true -Djavaplugin.trace.option=basic|net|security|ext|liveconnect
if you cannot start the java console check here:
C:\Documents and Settings\userName\Application Data\Sun\Java\Deployment\deployment.properties
I think for linux this is somewhere in youruserdir/java (hidden directory)
add or change the following line:
javaplugin.jre.params=-Djavaplugin.trace\=true -Djavaplugin.trace.option\=basic|net|security|ext|liveconnect
for 1.5:
deployment.javapi.jre.1.5.0.args=-Djavaplugin.trace\=true -Djavaplugin.trace.option\=basic|net|security|ext|liveconnect
The trace is here:
C:\Documents and Settings\your user\Application Data\Sun\Java\Deployment\log\plugin...log
I think for linux this is somewhere in youruserdir/java (hidden directory)

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