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  1. #1
    Technolithic is offline Member
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    Jul 2009
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    Default Applet with Signed JAR throws AccessControlException in AppletViewer


    Perhaps I'm missing a few marbles that contained the security protocol for the applet viewer utility and if so, please let me know where I can reorder the much needed replacement parts!

    Anyhow, I have an applet that's been wrapped up into a JAR that is also signed. The applet can open a file chooser dialog box when running inside of the browser, but when running inside of the applet viewer, the file chooser throws an Exception:
    access denied (java.util.PropertyPermission user.dir read)
    at (AccessControlConte
    at java.lang.SecurityManager.checkPermission(Security
    at java.lang.SecurityManager.checkPropertyAccess(Secu
    at java.lang.System.getProperty(

    Does the Signed JAR help out with the security permissions or do I really need to set the permissions file for the applet to get it to run in the applet viewer?

  2. #2
    serjant's Avatar
    serjant is offline Senior Member
    Join Date
    Jun 2008
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    Sign the jar file in order to have the permission to make modification on the local file system or make a policy to some of your classes:

    Java Security Evolution and Concepts, Applet Security

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