A CF template named Setsession.cfm might lead to a class file named cfsetsession2ecfm1011928409.class. The numbers that follow the 2ecfm are a hashing of the directory name. Here are the details from Mike Nimer at Macromedia:
How CFMX creates the .class name, or how you can find the name of the .class file you want to delete
The formula is: "cf" + filename + hashCode
The fully canonicalized filename is used, with "/" as the directory separator. The following substitutions are made in the filename:
1.) / becomes __
2.) any other character which would be illegal in a Java identifier is represented as 2 hex digits
hashCode is the hashCode() of the File object which represents this file as documented at http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#hashCode()
If the hashCode() is negative, it is exclusive-OR'd with 0xFFFFFFFF to get the value used by ColdFusion.
Note that even two files in the same directory could end up with hashcode values that are different. You can prove this by creating two templates in the same folder, with distinctive names that you can readily identify, and then save and execute those pages, and view the latest class files created in the cfclasses folder. Do both those distinctively named files in the same folder show having the same or different codes? If anyone may be able to help understand how that can happen, I'd love to hear.