Standard practice with missing dependencies?

[Christian Convey <conveycj@npt.nuwc.navy.mil>]

Hi guys,

I went to "apt-get install sun-j2sdk1.4debian", but I was smacked down 
with this error:

> Reading Package Lists... Done
> Building Dependency Tree... Done
> Some packages could not be installed. This may mean that you have
> requested an impossible situation or if you are using the unstable
> distribution that some required packages have not yet been created
> or been moved out of Incoming.
>
> Since you only requested a single operation it is extremely likely that
> the package is simply not installable and a bug report against
> that package should be filed.
> The following information may help to resolve the situation:
>
> The following packages have unmet dependencies:
>   sun-j2sdk1.4debian: Depends: sun-j2sdk1.4 but it is not installable
> E: Broken packages
> foozle:/home/cconvey# apt-get install --fix-missing sun-j2sdk1.4debian
> Reading Package Lists... Done
> Building Dependency Tree... Done
> Some packages could not be installed. This may mean that you have
> requested an impossible situation or if you are using the unstable
> distribution that some required packages have not yet been created
> or been moved out of Incoming.
>
> Since you only requested a single operation it is extremely likely that
> the package is simply not installable and a bug report against
> that package should be filed.
> The following information may help to resolve the situation:
>
> The following packages have unmet dependencies:
>   sun-j2sdk1.4debian: Depends: sun-j2sdk1.4 but it is not installable
> E: Broken packages

So my guess is that there's *probably* something lacking about my 
sources.list file.

What's the general approach people take to rectify their sources.list 
file when they get the error that I got?

I mean, I could Google for the missing package (sun-j2sdk1.4), but will 
that necessarily help me understand what to add in sources.list?

Thanks,
Christian


P.S.: Here's the content of my sources.list file:

deb file:///home/ftp/debian/       testing         main non-free contrib
deb file:///home/ftp/debian/       unstable        main non-free contrib
deb file:///home/ftp/debian-non-US testing/non-US  main contrib non-free
deb file:///home/ftp/debian-non-US unstable/non-US main contrib non-free
deb file:///home/ftp/marillat/     testing         main
deb file:///home/ftp/marillat/     unstable        main








--
Christian Convey
Computer Scientist,
Naval Undersea Warfare Center
Newport, RI