Runtime.exec() for an applet

I have a java program that runs another program using Runtime.getRuntime().exec (cmd1, envArr, f);

now I want to turn my program to an applet, and this command causes an exception:

java.security.AccessControlException: access denied (java.io.FilePermission <<ALL FILES>> execute)

How can I write this command for an applet?

[360 byte] By [LeaTsabana] at [2007-11-27 10:04:51]