gcj reading stdin gets leading "?" character

[David Van Horn <dvanhorn@xxxxxxxxxxxx>]

I fear this may be a FAQ, but I can't find it...

public class ekko {
    public static void main (String[] args) {
        for (int i = 0; i < args.length; i++)
            System.out.println( args[i] );
    }
}

gcj --main=ekko ekko.java -o ekko

./ekko this
?this

How do I get rid of this leading question mark?

TIA

-d