Loading .gif files using ImageIcon in Applets

[AndyKnappJava]

Hi,

I'm trying to read in an icon for a button using the ImageIcon constructor:

ImageIcon icon = new ImageIcon( <file name> );

This is fine when the code is on my local machine or being run under AppletViewer, however when I try to run the applet through a web browser I get a:

java.security.AccessControlException: access denied(java.io.FilePermission not.gif read)

I've made sure the not.gif file has read access on my web server and that the file is in the same location as the .class file - what more do I need to do?!!

Thanks Andy

 

[palbano]

I think the security model might require signing the applet. I also think there was a recent thread in this forum regarding that subject. You might do a search for &quot;sign applet&quot; or something like that.

-pete

 

[AndyKnappJava]

Thanks Pete,

I'm still reading through the Security in Java Trail on the sun tutorial:

http://java.sun.com/docs/books/tutorial/security1.2/TOC.html

but am failing to see why I need to generate a signed applet if all I'm trying to do is read a .gif file from the same location on a webserver as the applet's .class files.

Why is there a security/permissions issue here?

Are .gif files not trusted if at the same location as the .class files?

Regards Andy.

 

[palbano]

>> Are .gif files not trusted if at the same location as
>> the .class files?

Great question Andy. To be honest i have not had reason to keep up with the Java Applet security issue. Perhaps if you gain a solid understanding for your project you can post an explination here? Maybe even create a FAQ?

-pete