DouKaku?

#! c:\ruby\bin\ruby.exe -Ks

String.class_eval do |string|
    def words
        self.split(//)
    end
    def fix_width(width, padding)
        (self.words.size > width) ? self : (padding * (width - self.words.size) + self)
    end
end

Fixnum.class_eval do |fixnum|
    alias :to_s_orig :to_s
    def to_s(base, width)
        binary = self.to_s_orig(base).fix_width(width, "0")
    end
end

class BinaryClock
    attr_accessor :now
    def initialize
        self.now = Time.now
    end
    def print
        output(self.now.hour.to_s(2, 5))
        output(self.now.min.to_s(2, 6))
    end
private
    def output(binary)
        puts binary.words.map { |f| f == "0" ? "□" : "■" }.join.fix_width(6, "　")
    end
end

BinaryClock.new.print

object BinClock {
    import java.util._
    def main(args:Array[String]){
        val now = Calendar.getInstance()
        val hour = now.get(Calendar.HOUR_OF_DAY)
        val min = now.get(Calendar.MINUTE)
        val hour_bin = Integer.toBinaryString(hour)
        val min_bin = Integer.toBinaryString(min)
        val hour_shikaku = hour_bin.replace("1","■").replace("0","□")
        val min_shikaku = min_bin.replace("1","■").replace("0","□")
        println(hour_shikaku)
        println(min_shikaku)
    }
}