If you have not heard the buzz about JRuby and Rails, you must be living under a rock. The Java, Ruby and Rails communities are all excited with possibilies that JRuby and Rails gives to web application developers. Java has been used for more than 10 years in desktop, mobile, web, and enterprise application development. Ruby and Rails are the twin towers of web application agility and coolness and are igniting the web and software application development community with their pragmatic practices. With JRuby, Ruby, and Rails, applications can now run on top of JVM and use the vast Java frameworks and libraries available.
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