java prog..Screen Saver

try Runtime.getRuntime().exec("c:\windows\myscreensaver.scr");

s.okujava

U can definatly execute an exe from java code...u can always embed java code in html...

Use exec() of java.lang.Runtime class to execute any exe namely notepad or a screen saver for that matter....
This method will execute the specified string command in a separate process...

in case u want code ::

Runtime r = Runtime.getRuntime();
r..exec("C:\WINNT\Notepad");

(assuming u r working on NT/2000)