error:access denied (java.security.SecurityPermission getPolicy)

Hi,

I want set some permission from within my code as following:

Policy isgPolicy;

try{

isgPolicy=Policy.getPolicy();

PermissionCollection isgPC=isgPolicy.getPermissions(new CodeSource(codeBase,null));

isgPC.add(new FilePermission("java.lang.RuntimePermission","writeFileDescriptor"));

}catch(Exception e){};

But the Policy.getPolicy() method will throw java.security.SecurityPermission "access denied" exception. I have no idea what to do at all. Please help.

Thank you.

Janet

[561 byte] By [kfsong] at [2007-9-26 4:08:45]