SecurityException: Unable to create temporary file with applet

My applet tries to write a temp file

try{

File temp = java.io.File.createTempFile("student",".log");

strFilename = temp.getAbsolutePath();

}

}catch (IOException e1){

e1.printStackTrace();

}

But when I run, it throws an exception:

java.lang.SecurityException: Unable to create temporary file

I tried to sign the applet, as to http://www.developer.com/java/data/article.php/3303561 but it's still the same.

There's another way: using java.policy,

grant{

permission java.security.AllPermission;

};

but it seems to be not very gentle. Could you show me the solution please? Thanks in advance.

Cheers,

[1013 byte] By [Lehoanqa] at [2007-11-27 1:56:27]