是否可以阻止Ruby脚本在JRuby中导入Java？

Question

From this page: https://github.com/jruby/jruby/wiki/CallingJavaFromJRuby

In a Ruby script, if you use require 'java' , the script will be able to create things like JFrame s and such.

It may sound odd, but, is it possible, in any way, to not allow such feature (disable importing Java )?

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If you are curious as to why am I asking, it is because I'm developing some kind of game engine on Java, but it allows users to script with Ruby to control the game logic - only the game logic. I don't want to give the freedom of creating JFrame s.

Answer 1

一种方法是将“ java”放入已加载的功能（$“数组）中，然后要求将其假定已被加载，而不是尝试再次加载。用户当然可以将其从该数组中删除，然后重试。