A.scala

//import java.io.ByteArrayInputStream
import java.io.{BufferedReader,InputStreamReader}

object A {
    def main(a: Array[String]) {
        for (i <- 0 until 10) {
            println("hello " + i)
        }
        val ls = Runtime.getRuntime.exec("ls -l")
        var in = ls.getInputStream
//      in = new ByteArrayInputStream("abc\n".getBytes())
        val re = new BufferedReader(new InputStreamReader(in))
        var s = null: String
        while ({ s = re.readLine; s != null}) {
            println(s)
        }
    }
}