Ruby has nothing to do with java, mainly because people who engage in java pay attention to it, which also reflects the activeness of the JAVA community and the concern for open source
.net of course can do ruby
Ruby and Java are related because Ruby has great flexibility. This flexibility has caused rethinking of software design issues, and the Java community is no exception. On the other hand, it may be due to the continuous maturity of JRuby, I guess~