Java tutorial
import java.net.SocketPermission; import java.security.AccessControlException; import java.security.AccessController; public class AccessTest { public static void main(String[] a) { SocketPermission sp = new SocketPermission("www.java2s.com", "connect"); try { AccessController.checkPermission(sp); System.out.println("Ok to open socket"); } catch (AccessControlException ace) { System.out.println(ace); } } }