Java applets, like other Java programs,
can use the API defined in the
to communicate across the network.
A Java applet can communicate with server applications
that run on the same host as the applet. This communication does not require
any special setup on the server.
To determine which host an applet came from,
String host = getCodeBase().getHost();
After you have the correct host name, you can use all the networking code that is documented in the Custom Networking trail.
For an example of implementing an applet that is a network client, see Network Client Applet Example.