Security Manager, Security Exception Detailed
		If a SecurityManager does not want to grant a request, it throws a SecurityException. With SecurityManager, we are really only concerned with the two signatures of the checkPermission method. One argument - permission - checks the permission in the current thread. Two arguments - permission and context - checks the permission with the thread snapshot in the context object. SecurityException is little more than a normal Exception. It has the same constructor. But, keep in mind, since it is a different class it can have its own catch blocks and throws statements. To set a Security Manager for an application, use: System.setSecurityManager(SecurityManager manager) You can make your own or use the default. All the permissions you'll ever want to know can be found in Permissions in the Java 2 SDK at http://java.sun.com/j2se/1.4.1/docs/guide/security/permissions.html  Java 2 Security