An interpreter for one-liner java expressions. Useful for testing stuff without writing mains; based on beanshell

sacrilege.rb

#based on jruby
require "java"
#copied the beanshell jar because jruby can't seem to be aware of the classpath
require "./bsh-2.0b4.jar"
#cf. http://bogojoker.com/readline/
require 'readline'
#based on this: http://blogs.sun.com/coolstuff/entry/using_java_classes_in_jruby

include_class Java::bsh.Interpreter

i = Interpreter.new
begin 
    #I should rescue from evalErrors, but meh, not now
    while instr = Readline.readline('> ', true)
        puts "=> #{i.eval instr}"
    end
rescue Interrupt => e
    system 'stty', stty_save
    exit
end