java重定向尺度IO[Java编程]

//: Redirecting.java
// Demonstrates the use of redirection for 
// standard IO in Java 1.1
import java.io.*;

class Redirecting {
  public static void main(String[] args) {
    try {
      BufferedInputStream in = 
        new BufferedInputStream(
          new FileInputStream(
            "Redirecting.java"));
      // Produces deprecation message:
      PrintStream out =
        new PrintStream(
          new BufferedOutputStream(
            new FileOutputStream("test.out")));
      System.setIn(in);
      System.setOut(out);
      System.setErr(out);

      BufferedReader br = 
        new BufferedReader(
          new InputStreamReader(System.in));
      String s;
      while((s = br.readLine()) != null)
        System.out.println(s);
      out.close(); // Remember this!
    } catch(IOException e) {
      e.printStackTrace();
    }
  }
} ///:~