JRuby and Java objects

Question

Please tell me if it is possible to do the following:

• create an instance of a specific class in Java
• pass it to JRuby to do something with it
• continue using the "modified" version in Java

May you provide a small working example?

EDIT: It turns out that embedding was the simplest way to achieve this. More information is available on Embedding JRuby .

Answer 1

Yes it's possible. This page on the JRuby wiki should get you started.

Answer 2

这是我使用的解决方案： 直接JRuby嵌入

Answer 3

It depends on what you mean by "do something". If you mean "redefine a method", then the answer is no, not really. The new method will be used by jruby, but any calls to the method in java will continue to invoke the old method.