Parsing ASCII communication with Hardware using Java/Scala? -

i writing software interface external device via exchange of ascii commands. example:

pos? 1 2 =>1=-1158.4405 =>2=+0000.0000 

where above ask position of motorised microscope stage 1-st , 2-nd axes. responds positions in um. more details , examples.

my question: there library ease parsing such string outputs, and/or generate queries? otherwise, best practises parsing , communicating hardware using java/scala?

trying cope following syntax (see 12.1 format):

 reply syntax:      [<argument>[{sp<argument>}]"="]<value>lf  multi-line reply syntax:      {[<argument>[{sp<argument>}]"="]<value>sp lf}      [<argument>[{sp<argument>}]"="]<value>lf last line! 

this code:

import scala.util.parsing.combinator._  case class result(argument: string, value: float)  class replyparser extends regexparsers{     override def skipwhitespace = false     private def floatingpointnumber: parser[string] =          """(-|\+)?(\d+(\.\d*)?|\d*\.\d+)""".r     private def value: parser[float] = floatingpointnumber ^^ (_.tofloat)     private def argument: parser[string] = "[^= \n]+".r     private def arguments: parser[list[string]] = rep1sep(argument," ") <~ "="     private def result: parser[list[result]] = arguments.? ~ value ^^ {         case arguments ~ value =>              arguments.getorelse(list("")).map {                 result(_,value)             }     }     def reply: parser[list[result]] = rep1sep(result, " \n".r) <~ " " ^^ {         case result => result.flatten     } }  object parsing extends replyparser {     def main(args: array[string]) {         val result = parseall(reply,"a=+000.123 \nc d=-999.567 \n789 ")         println(s"$result")     } }