I guess not, you would need some runtime environment to run class file. However, on windows it is possible for users to run class files using a batch file that uses Microsofts Virtual Machine(jview.exe).Microsoft's VM is installed with IE 5.x.
Snigdha<br />Sun Certified Programmer for the Java™ 2 Platform
Of course you can just "bundle" the jre with your application without really "installing" it and have your users invoke a bat file that sets the path and classpath on the fly to look at your applications jre even if they do not have java "really" installed. The jre is not all that big.
"JavaRanch, where the deer and the Certified play" - David O'Meara
I’ve looked at a lot of different solutions, and in my humble opinion Aspose is the way to go. Here’s the link: http://aspose.com