try to create documentation with javadoc but it could not be launched

help me please,when i try to generate javadoc i get a bug:could not launch javadoc commanderror=193i don't know why. maybe because i have no packagelist in the doc folderbut how do i create a packagelist?
[247 byte] By [blabla111a] at [2007-10-2 15:51:17]
# 1
I would guess this error message means the command interpreter (MS-DOS, if you're on Windows) cannot find the javadoc command. Please paste in your command. What OS are you using?
dhkramera at 2007-7-13 15:58:42 > top of Java-index,Developer Tools,Debugging and Profiling Tool APIs...