gistfile1.rb

%w{interface java_name package signature}.each do |x|
  require File.join(File.dirname(__FILE__), x)
end

module Compilable

  def self.extended(a_class)
    Class.compilable_classes << a_class if a_class.is_a? Class
  end

  def compilable?
    !java_name.nil?
  end
end

class Class

  def self.compilable_classes
    @@compilable_classes ||= []
  end
end