title: Getting a NumberFormatException
body: <p>I was writing some code for an interviewstreet.com challenge
  My code gives a NumberFormatException</p>
  
  <pre><code>import java.io.*;
  
  public class BlindPassenger
  {
    public static void main(String [] args) throws IOException
    {
      BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
      String line = br.readLine();
      int t,n;
      //System.out.println(line);
      t = Integer.parseInt(line);
      for(int i=0;i&lt;t;++i)
      {
        line = br.readLine();
        n = Integer.parseInt(line); --n;
        if(n == 0)
        {
          System.out.println("poor conductor");
        }
        else
        {
          char direction='l',seat_posn='l';
          int row_no = 0, relative_seat_no = 0;
          row_no = (int) Math.ceil(n/5.0);
          relative_seat_no = n % 5;
          if(row_no % 2 == 0)
          {
            //even row, need to reverse the relative seat no
            relative_seat_no = 6 - relative_seat_no;
          }
  
          if(relative_seat_no &lt; 3)
          {
            direction = 'L';
            if(relative_seat_no == 1) seat_posn = 'W';
            else seat_posn = 'A';
          }
          else
          {
            direction = 'R';
            if(relative_seat_no == 3) seat_posn = 'A';
            else if(relative_seat_no == 4) seat_posn = 'M';
            else seat_posn = 'W';
          }
  
          System.out.println(row_no + " " + seat_posn + " " + direction);
        }
      }
    }
  }
  </code></pre>
  
  <p>Here is the test case that they use</p>
  
  <pre><code>3 
  1 
  2 
  3 
  
  Output: 
  poor conductor 
  1 W L 
  1 A L
  </code></pre>
  
  <p>There seems to be a trailing space or something at the end of each line that causes the exception.</p>
  
  <pre><code>$ java BlindPassenger &lt;input00.txt
  Exception in thread "main" java.lang.NumberFormatException: For input string: "3
   "
          at java.lang.NumberFormatException.forInputString(NumberFormatException.
  java:65)
          at java.lang.Integer.parseInt(Integer.java:492)
          at java.lang.Integer.parseInt(Integer.java:527)
          at BlindPassenger.main(BlindPassenger.java:11)
  </code></pre>
  
  <p>This has taken up half an hour and I don't know how to fix this.
  Kills the fun of the event doesn't it. Can someone tell me what I'm doing wrong.</p>