Can you run a class using the JRE from other than a command line?

I understand how to use command line compiling and running of an application, but is it supposed to be configured so that one can double-click a class file and the program will run?Many thanks.
[207 byte] By [stilea] at [2007-11-26 20:21:28]
# 1
Answered here: http://forum.java.sun.com/thread.jspa?threadID=5143694
prometheuzza at 2007-7-10 0:46:14 > top of Java-index,Desktop,Runtime Environment...