Showing JApplet in browser

Question

Hi,
Maybe this sounds as a stupid question, but I have really no idea how I can resolve this problem. I would like to show a Japplet application in a browser. The application works fine when I run it in the IDE or in my command prompt (using appletviewer). In my browser I get a security problem. In my application, I need to show some images, which can be found in a subdirectory of a directory wherein I've also saved my html file. If I work with relative paths - let's say subdir\image.jpg - I get the following error: exception: java.security.AccessControlException:access denied(java.io.filePermission subdir\image.jpg read) in my status bar. On the other hand, if I use absolute path names everything works fine.
Can anyone tell me why it won't work if I use relative path names? The subdirectory must be recognized somehow, because the subdirectory and the html file are in the same directory

Answer 1

I have a directory called cards with 52 images, I want to put the paths of all these cards in a string array.
Why? if the 52 images are in the cards directory all 52 of them will have the same path.
If the 52 images are called 0 to 99999 you can check if a file called
00000.jpg exist like this:
URL u = null;
URLConnection c = null;
while(i<99999 ){
try{
u = new URL(this.getCodeBase(),"cards/" + (new Integer(i)).toString() + ".jpg");
c = u.openConnection();
// read the rest of the file using c
}catch(Exception e){
// what you want to do, chekc the next one or exit, now it will exit
i = 999999;
i++;
To get a directory listing from the applet you have to sign it or set up a policy for it.