comm.jar is used for what?

I got one post related to comm.jarwhy is is used for I'm new to java technology.Can any buddy help me?
[124 byte] By [bhatt@.suna] at [2007-10-3 8:55:37]
# 1
It's mainly a communication api to access through serial ports.
emrahbudura at 2007-7-15 4:05:46 > top of Java-index,Desktop,Developing for the Desktop...
# 2
you guys need to Google this kind of stuff and stop hosing up the forums with general questions
MickeyOnJavaa at 2007-7-15 4:05:46 > top of Java-index,Desktop,Developing for the Desktop...