In your Java program you call
Process md5Process = Runtime.getRuntime().exec(command.toString());
command in this case is a Perl script that prints out a few lines of text.
How can i read these 2 lines inside my Java program?
md5Process.getInputStream()
and
md5Process .getErrorStream()
as described in http://download.oracle.com/javase/6/docs/api/java/lang/Process.html