// File: file_io1b.java
//
// Author: Rahul Simha
// Created: Jan 20, 2003
//
// Illustrates reading from a file using a while.
// A file is read line-by-line and each line is 
// printed to the screen.

import java.io.*;

public class file_io1b {

  public static void main (String[] argv)
  {
    try {
      // These are the key steps in setting up the read operation.
      FileReader fr = new FileReader ("testdata");
      LineNumberReader lr = new LineNumberReader (fr);

      // Now read the input lines
      String input_line = lr.readLine ();
      int i = 0;
      while (input_line != null) {
        i ++;
        System.out.println ("Line " + i + ": " + input_line);
	input_line = lr.readLine ();
      }

      // Done.
      lr.close();
    }
    catch (IOException e) {
      // If there was a problem...
      System.out.println (e);
    }
    
  }
}