Trying to compile program using Swing.

I am trying to compile a SWING program (i.e. JFrame, JButton etc). Program does not have main method.

Obviously when I compile, I get

Exception in thread "main" java.lang.NoSuchMethodError: main.

Isnt it allowable to have a Swing pgm without a main method ?

Am I missing something obvious? Do I need to move a Swing jar file somewhere? Using J2SDK1.4.0 on WindowsME. Java is installed OK, because I can compile and execute other basic programs..

[477 byte] By [JohnnieHoosiera] at [2007-9-27 9:15:37]