This Cookbook offers practical solutions for using the Java implementation of Ruby language, with recipes targeted to deploy Rails web applications on Java servers, integrate JRuby code with Java technologies, developing JRuby desktop applications with Java toolkits, and more. Using the sample code that can be reused many, JRuby Cookbook shows you how to: Install and update JRuby on Windows, Mac OS X, and Linux, and IDE such as NetBeans and Eclipse Package and deploy Rails applications on Java Servlet containers and Java EE application servers, including JBoss, Tomcat, and GlassFish Integrating Ruby and Rails applications with popular Java EE technologies such as JMS, JMX, JPA, Spring, and Hibernate Develop desktop and client applications with cross-platform Java technology and UI toolkits such as Swing, SWT, and Java 2D Maximize the flexibility of testing and build environment, using both existing Java-based tools like Ant and Maven and newer Ruby-based tools such as Rake, Raven, and Buildr JRuby interpreter combines Ruby's simplicity and ease of use with extensive Java libraries and technology, a powerful blend that opens new possibilities for Ruby, Rails, and Java.