[5481] in java-interest
Re: SecurityException error
daemon@ATHENA.MIT.EDU (JoanMa MAS RIBES)
Mon Feb 12 15:45:18 1996
Date: Mon, 12 Feb 1996 10:16:26 +0100
From: JoanMa MAS RIBES <mas@tele.ucl.ac.be>
To: Kenneth Cheng <kcheng@cs.stanford.edu>
CC: java-interest@java.sun.com
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Kenneth Cheng wrote:
>
> When I opened a file to a RandomAccessFile object, I receive the following
> I received an error when I tried to create a RandomAccessFile object. Here is
> the error message I received:
> **Security Exception: file.read:TESTING***
> sun.applet.AppletSecurityException: security.file.read: TESTING
>
> This is what I did to open a file:
> RandomAccessFile rf = null;
> try {rf = new RandomAccessFile("TESTING"), "rw")}
> catch (Exception e) {System.out.println("error");}
>
> It is a very simple fragment to run. I had this segment together with my
> window interface program. But when I run the same fragment alone in a new
> file, it works.
> Any idea?
> -Yet Another Security Problem :(
Applets have a class called SecurityManager which implements the security
policy of the applet.
By default, netscape-like browsers have a very restrictive security policy.
Probably if you test your applet with appletviewer you won't have such
exception.
There is one way you can aviod this security exception : Access Control List.
This allows you to define files ans directories where your applets can read
from and write to.
But I think you'd better read the document
'Frequently Asked Questions - Applet Security'
http://java.sun.com/sfaq/
Hope this will help you :)
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_/ _/ _/ _/ _/ _/_/ JoanMa MAS RIBES
_/ _/_/_// _/_/_// _/ _/
_/ _/ _/_/ _/ _/_/ _/_/ Universite Catholique de Louvain
_/ _/ _/ _/ _/ _/ _/ _/ Laboratoire de Telecommunications
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B-1348 - Louvain La Neuve
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Security is when everything is settled.
When nothing can happen to you.
Security is the denial of life.
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