JRuby Installation Notes

Installation Notes for JRuby

1. Oanda_API requires ruby 2.0 or higher, however the gem command (as of v2.4.7) running in jruby cannot install gems in ruby 2.0 mode (JRUBY_OPTS="--2.0").

2. To install, set ruby mode to 1.9:

   >export JRUBY_OPTS="--1.9"
   

3. Use the gem command's force option to tell gem to install the oanda_api gem while running in ruby 1.9 mode, to override the gem's requirement for ruby 2.0 or higher.

   >gem install oanda_api --force
   

4. Make sure to set the ruby mode back to 2.0 when actually using the oanda_api gem.