scala读写文件

遍历输入文件的每一行，将第一个出现的空格，替换为tab分隔符。

import java.io.{File, PrintWriter}import scala.io.Sourceobject codingPractice {    def main(args: Array[String]) :Unit = {      val fileName = args(0)      val writer = new PrintWriter(new File("./output.txt"))      for(line <- Source.fromFile(fileName).getLines()){//        println(line)        val newLine = line.replaceFirst(" ","\t")        writer.write(newLine)        writer.write("\n")      }        writer.close()    }}