FilePermissions

Question

Im trying to make an applet that will read from a file, but, since applets dont allows for that, i need to give it permissions. Unfortuently i dont know how to use FilePermmissions to do this. i think this is what i do but im not sure
     FilePermission fi = new FilePermission("C:/Temp/file", "Read");Can someone help me or point me to a tutorial that shows me how to do this in java?

Answer 1

If i sign it does it automatically give it permissions? No. What happens next is that somebody loads the page that includes your applet. The browser notices that it's a signed applet and it puts up a dialog telling the user that the applet is requesting permission to do whatever it was you asked for when you signed the applet. If the user accepts, then your applet has those permissions. If the user refuses, then it doesn't.
You probably haven't thought through the implications, but if you do you should realize there is nothing you can do that will automatically give you permission to do unsafe things on somebody else's computer. Frankly if you hadn't heard that there are people out there who want to break into other people's computers and install harmful software on them -- something you could do with a signed applet -- then you shouldn't be developing web software just yet. But I'm sure you had heard that, you just didn't make the connection to your own activities. Locks work equally against bad guys and good guys.