Is it possible for Eclipse to read stdin from a file?
There is a new Eclipse version, Eclipse 4.5 (Mars) which has fixed the issue!
This is the announcement and description of the feature: http://eclipse.org/mars/noteworthy/#_assigning_stdin_to_a_file
Stdin can now be assigned to a file in the Common tab of launch configuration dialogs.
As expected, this is a new feature of the just released eclipse 4.5 and will therefore not work in an older version.