Basic HTML version of Foils prepared April 7 1998

Foil 54 What can applets do - I?

From Basic Principles of Java and Internet Security CPS616 Web Technologies -- Spring 98. by Geoffrey C. Fox


Currently the rules are strict and in fact unreasonably so because these rules stop applets from doing things that we want general client programs to do. They are necessary as we must assume the worst about applet!
  • We need security so that we can identify those applets that can be given more privileges!
Applets cannot read write delete rename files
Applets cannot create a client directory or list a directory
Applets cannot find out any information about a client file including whether or not it exists
Applets can only create a connection to computer from which it was downloaded
Applets cannot accept or listen to network connections on any client port



© Northeast Parallel Architectures Center, Syracuse University, npac@npac.syr.edu

If you have any comments about this server, send e-mail to webmaster@npac.syr.edu.

Page produced by wwwfoil on Mon Apr 6 1998