See also:

• Computers: Programming: Languages: Interpreted: Bytecode  (4)
• Computers: Programming: Languages: Java  (2,483)
• Computers: Programming: Languages: Ruby: Implementations  (7)
• Computers: Programming: Languages: Ruby: Tools  (37)

JRuby - Ruby implemented in pure Java: newer Ruby interpreter done in Java, most built-in Ruby classes, supports interacting with and defining Java classes in Ruby, Bean Scripting Framework (BSF); news, downloads, FAQ, tutorials, limits, credits. Open source CPL/GPL/LGPL. Codehaus..

10 Things Every Java Programmer Should Know about Ruby - Slide presentation teaches Java programmers Ruby style and idioms quickly. Given at OSCON 2005; Dayton-Cincinnati .NET Code Camp 2006. By Jim Weirich..

Using Ruby: An Introduction to Ruby for Java Programmers - Small tutorial with many short pages. By Jim Weirich..

JRuby on Rails: The power of Java, the simplicity of Ruby on Rails - Developers are moving from full Java Platform, Enterprise Edition, to lightweight frameworks, yet even the lightest lacks the simplicity of RoR. JRuby joins Rails with the power, breadth, and industry acceptance of JVM, Java libraries, and application servers. Java World. (February 13, 2007).

Java, Ruby, and Sun - Brief story of Sun hiring Charles Nutter and Thomas Enebo to work on JRuby full time, with speculations. Ablog. (September 8, 2006).

Interviewing the JRuby Developers - Alternative Ruby implementations seem to be growing in the Ruby community. JRuby is most advanced now. Charles Nutter and Thomas Enebo, two main JRuby programmers, comment. O’Reilly Media. (July 17, 2006).

Ruby for the Java World - Dynamic languages are coming competitors to Java. Growing their scope beyond glue code and Web GUIs into the heavy work once done only with compiler, languages such as Python, PHP, Groovy, and Ruby have fast gained popularity. JavaWorld. (July 17, 2006).

A Gem of a Language for Java and .Net - Independent projects are bringing Ruby to 2 widely-used development frameworks; reactions of Sun, Microsoft. Internetnews.com. (May 26, 2006).

Ruby the Rival - Bruce Tate's Beyond Java suggests Ruby as a top contender to displace Java. Tate, James Duncan Davidson, Robert Cooper and Bill Venners opine on Ruby and its challenge to Java. O'Reilly Media. (November 16, 2005).