2. Today
• Why big?
• Let’s get JRoR started!
• Java, NetBeans, JRuby, and Rails
• DB Connecton
• That’s all?
3. Why updating?
• The very first JRoR book was released in
May 2007
• One year later, we have so much change
• JRuby 1.0 -> 1.1
• Most of the setup stuffs don’t work!