[news.eclipse.newcomer] debugging rt.jar

["Martin Holmes" <martincanbe@xxxxxxxxxxx>]

Hi all,
        I would like to step through and debug rt.jar

So far  I have created an eclipse project and unzipped src.zip and allowed 
eclipse to compile it, after which I jarred it back up into myrt.jar. I then 
specifed this on the buid path for the project I wished to debug.

My problem is that Eclipse still complains with "absent line number 
information" even thou' I ticked the checkbox to include them from within 
Eclpise when I compiled the classes.

Can anyone help or has anyone been able to debug rt.jar?

Thanks