chsh

#
# A:
# pubsub = PgPubSub.new('channelname')
# pubsub.subscribe do |data|
#  puts "data: #{data} is coming!"
# end
#
# B:
# pubsub = PgPubSub.new('channelname')
# pubsub.publish("hello world")

jewelsea

import javafx.application.*;
import javafx.geometry.Pos;
import javafx.scene.*;
import javafx.scene.control.Label;
import javafx.scene.layout.*;
import javafx.scene.paint.Color;
import javafx.stage.*;

import javax.imageio.ImageIO;
import java.io.IOException;