Convert a CSV File in Groovy, Java or Scala?

Last week I have simple task I must convert a simple CSV file into another CSV format. My first solution was a simple Groovy script. Then inforw sends me a Java solution, to show me that with Java it is no much more code then the Groovy implementation is. Today I wrote just for fun a solution in Scala, to see how the code looks in Scala. My favorite of the three implementations is at the moment the Groovy one. But I think the Scala implementation has the best readability. Below you see the three implementations.

I'm curious what you like, feel free for comments? And I would be glad if someone contributes even further implementation in Clojure, Python, Perl,… or even a better Scala, Java or Groovy implementation.

The Groovy Implementation:

	new File("output.csv") withPrintWriter { out ->
	new File("input.csv") splitEachLine(';') { fields ->
	def name = fields[2]
	def firstname = fields[1]
	def kto = fields[3]
	def blz = fields[4]
	def amount = fields[5]
	out.println "${name};${firstname} ${name};${kto};${blz};${amount}"
	}
	}

view raw csvconvertor.groovy hosted with ❤ by GitHub

The Java Implementation:

	import java.io.*;
	public class CsvConvertor {
	public static void main(String[] args) throws Exception {
	FileWriter out = new FileWriter("output.csv");
	BufferedReader in = new BufferedReader(new FileReader("input.csv"));
	String line;
	while ((line = in.readLine()) != null) {
	String[] fields = line.split(";");
	String name = fields[2];
	String firstname = fields[1];
	String kto = fields[3];
	String blz = fields[4];
	String amount = fields[5];
	out.append(
	String.format("%s;%s %1$s;%s;%s;%s%n",
	name, firstname,kto, blz, amount));
	}
	out.close();
	}
	}

view raw CsvConvertor.java hosted with ❤ by GitHub

The Scala Implementation:

	import io.Source._
	import java.io._
	object CsvConvertor extends Application {
	val outputCsv = new FileWriter("output.csv")
	val accounts = fromFile("input.csv") getLines() map (line => Account(line))
	accounts foreach (account => outputCsv append (account toCsv))
	outputCsv close
	}
	case class Account(line: String) {
	val data = line split (';')
	val firstname = data(1)
	val lastname = data(2)
	val kto = data(3)
	val blz = data(4)
	val amount = data(5)
	def toCsv() =
	"%s;%s %1$s;%s;%s;%s%n" format (lastname, firstname, kto, blz, amount)
	}

view raw CsvConvertor.scala hosted with ❤ by GitHub

Thanks @inforw for the discussion and the Java implementation.