return f1name.compareToIgnoreCase( f2name );
        }
        i = f1name.lastIndexOf( '.' );
        t1 = i == -1 ? "" : f1name.substring( i + 1 );
        i = f2name.lastIndexOf( '.' );
        t2 = i == -1 ? "" : f2name.substring( i + 1 );

        i = t1.compareToIgnoreCase( t2 );
        if( i == 0 ) {
            return f1name.compareToIgnoreCase( f2name );
        }
        return i;

            return f1name.compareToIgnoreCase(f2name);
        }
        i = f1name.lastIndexOf('.');
        t1 = i == -1 ? "" : f1name.substring(i + 1);
        i = f2name.lastIndexOf('.');
        t2 = i == -1 ? "" : f2name.substring(i + 1);

        i = t1.compareToIgnoreCase(t2);
        if ( i == 0 ) {
            return f1name.compareToIgnoreCase(f2name);
        }
        return i;
    }