Top "Jruby" questions

NoClassDefFoundError on org.jruby.Main

I'm trying to install the hpricot gem on my Windows machine using JRuby 1.4.0RC1. I'm trying to follow the advice …

java windows jruby hpricot

Sinatra doesn't know this ditty even when default route is implemented with modular style

I'm running MacOS mavericks whith jruby and am trying to write a basic modular sinatra app. Here's what my config.…

ruby sinatra jruby modular

Convert JRuby string to Java byte array, and back again

I'm trying to pass a binary string in JRuby as a byte[] through some Java library and into JRuby again, …

jruby

Does Scala scale better than other JVM languages?

Here is the only way I know to ask it at the moment. As Understand it Scala uses the Java …

ruby scala twitter scalability jruby

Can I import Java class files into JRuby?

The documentation seems to suggest that in order for me to import Java classes into JRuby, that they must be …

jruby jruby-java-interop

JRuby on Rails: Adding a folder to the classpath

I'm trying to add an entire folder to the JRuby 1.5 classpath for my Rails app. The JRuby Wiki suggests the …

ruby-on-rails classpath jruby jrubyonrails

big array manipulation is very slow in ruby

I have the following scenario: I need to figure out the unique list of ids across a very large set. …

ruby performance jruby

How do I find my PID in Java or JRuby on Linux?

I need to find the PID of the current running process on a Linux platform (it can be a system …

java linux jruby pid

Using Custom Java Class file in Jruby

I am trying to execute some custom Java code through the latest version of Jruby (1.5.1), Ruby 1.8.7, with Java 1.6.0_06. I have …

jruby jruby-java-interop