This video demonstrates several strategies for incrementally moving portions of the application to Ruby and taking advantage of the productivity of Rails in a legacy Java environment. While JRuby could be an integration glue for Java applications, introducing Rails into an existing application without any significant rewriting is not obvious.
Video Producer: Scottish Ruby Conference
Java legacy??? Don’t think so!
I think it was the application that was considered as “legacy” and not the Java language ;o)
Maybe it would make more sense to just modernize the application then and keep the code in Java?
Ruby is as old as Java. One legacy gets converted to another :)
Touché ;)