pg_dump and pg_restore in batch scripts

[Tim Penhey <tim(at)penhey(dot)net>]

I read somewhere an example of how to do pg_dump and pg_restore on *nix 
so as to not have it ask for a password, but is there any way in the 
Win32 environment to do this?

What I am actually trying to do is to get a java servlet to execute the 
dump command and return through http the dumped file.  Once that works 
it will be to upload the file to the servlet and execute the restore 
command.  The java servlet will have the username and password to the 
database for the jdbc connection.

Thanks,
Tim