From: brabuhr@...
Date: 2009-08-21T01:27:05+09:00
Subject: Re: Confirm my Performance Test Against Java?

On Thu, Aug 20, 2009 at 11:22 AM, Ben
Christensen<benjchristensen@gmail.com> wrote:
> -- My preference would be, if I can write 97% of the program in Ruby,
> and
> -- 3% in C, is that really going to be less pleasant than writing 100%
> of the
> -- program in Java?
>
> An interesting observation and one I must consider.

Or, perhaps in your case: 9x% in Ruby, y% in Java.


Example 1:

require 'java'
java_import 'FileReadParse'

FileReadParse.new.do_stuff


Example 2:

require 'java'

java_import 'java.util.StringTokenizer'

File.open("/tmp/file_test.txt") do |file|
  file.each_line do |line|
    tokens = StringTokenizer.new(line)
    tokens.each do |token|
      #do_stuff_with(token)
    end
  end
end

(Though in the token counting case, example 2 is slower than pure
ruby: "tokens = StringTokenizer.new(line)" takes more time than
"tokens = line.split".)


Example 3:

require 'java'

java_import 'TokenProcessor'

token_processor = TokenProcessor.new

File.open("/tmp/file_test.txt") do |file|
  file.each_line do |line|
    line.split.each do |token|
      token_processor.process(token)
    end
  end
end


There could also be room in your toolbox for Ruby to help in the
testing of your Java code:
http://jtestr.codehaus.org/
http://wiki.github.com/aslakhellesoy/cucumber/jruby-and-java