I hope you??™ll enjoy Ola??™s efforts to help you see not only how great JRuby is on its own, but also
how great Java and Ruby taste together.
This book is really about bringing you into an expanding new community. With each new
JRuby user, the potential for exciting change grows. I hope you??™ll take up the torch as you read
this book, and that you??™ll soon be out there finding (and sharing) new ways to use JRuby to
make your life better.
Happy JRuby hacking! I??™ll look forward to seeing you on the JRuby IRC channel and
mailing lists soon.
xvii
Foreword by Martin Fowler
The world of web application development has been given quite the shake in the past couple
of years by the rise of Ruby on Rails. Many famous names (or incessant loudmouths) who are
well known in the Java world have become strong advocates of Ruby and Rails??”even to the
point of leaving the Java world for good.
I??™ve been using Ruby for many years, and I??™m a big advocate of the language. It focuses on
a clear but simple syntax that I find captures my intentions much more clearly than the mainstream
curly brace languages. It??™s fully object oriented and has powerful language features
such as closures. In particular, it offers a wide range of tools for metaprogramming and creating
domain-specific languages. These features underpin Rails??”making it much easier to
create such an influential web framework.
Since Rails has appeared, I??™ve talked to many colleagues who??™ve given it a spin.
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