You can use the java.net.URLConnection and java.net.
URL classes to open a standard HTTP connection to the web server.
The server then passes this information to the servlet in the normal way.
The applet pretends to be a web browser, and the servlet doesn't know the difference.
The servlet is concerned, the applet is just another HTTP client.
For more infomation on Java.net visit to :http://www.roseindia.net/java/network/