Is there a debugger which comes with Java?

Hi,
I am running Java from the command line currently (my machine won't cope with an IDE) and would like to debug a program. Is there some form of command line debugger I can use?
Cheers
Stephen

yup, jdb.
http://java.sun.com/j2se/1.3/docs/tooldocs/tools.html
find the "jdb" links.
--p

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