34_io_stdin&stdout

import java.io._


// stdin
object StdInTest extends App {
  // 获取 InputStream
  private val in: InputStream = System.in
  // 将字节流 转换成字符流
  private val reader: BufferedReader = new BufferedReader(new InputStreamReader(in))

  //读取数据
  println("请输入...")
  private val line: String = reader.readLine
  println(line)

  reader.close
}

// stdout
object StdOutTest extends App {
  private val out: PrintStream = System.out // 继承FilterOutputStream
  out.println("stdout")

}