Get password from console via Java and JRuby

pw_from_console.rb

# GIST: "pw_from_console.rb" under "https://gist.github.com/drhuffman12"
# If you're dealing with a Java character array (such as password characters that you read from the console), you can convert it to a JRuby string with the following Ruby code:

    jconsole = Java::java.lang.System.console()
    password = jconsole.readPassword()
    ruby_string = ''
    password.to_a.each {|c| ruby_string << c.chr}
    
    # .. do something with 'password' variable ..    
    puts "password_chars: #{password_chars.inspect}"
    puts "password_string: #{password_string}"
    

# See also "http://stackoverflow.com/a/27628738/4390019", and "http://stackoverflow.com/a/27628756/4390019"