Converting data to XML while Processing it

import java.io.*;
import java.text.*;
import java.util.*;
import org.jdom.*;
import org.jdom.output.XMLOutputter;

public class BattingAverage {

  public static void main(String[] args) {
     
    Element root = new Element("players");
     
    try {
      FileInputStream fin = new FileInputStream(args[0]);
      BufferedReader in 
       = new BufferedReader(new InputStreamReader(fin));
      
      String playerStats;
      
      // for formatting batting averages
      DecimalFormat averages = (DecimalFormat)
        NumberFormat.getNumberInstance(Locale.US);
      averages.setMaximumFractionDigits(3);
      averages.setMinimumFractionDigits(3);
      averages.setMinimumIntegerDigits(0);
      
      while ((playerStats = in.readLine()) != null) {
        String[] stats = splitLine(playerStats);
        
        String formattedAverage;
        try {
          int atBats = Integer.parseInt(stats[6]);
          int hits = Integer.parseInt(stats[8]);
          int walks = Integer.parseInt(stats[19]);
          int hitByPitch = Integer.parseInt(stats[21]);
          int sacrificeFlies = Integer.parseInt(stats[16]);
          int sacrificeHits = Integer.parseInt(stats[15]);
        
          int officialAtBats 
           = atBats - walks - hitByPitch - sacrificeHits;
          if (officialAtBats <= 0) formattedAverage = "N/A";
          else {
            double average = hits / (double) officialAtBats;
            formattedAverage = averages.format(average);
          }       
        }
        catch (Exception e) {
          // skip this player
          continue; 
        }

        Element player = new Element("player");

        Element first_name = new Element("first_name");
        first_name.setContent(stats[1]);
        player.addChild(first_name);
             
        Element surname = new Element("surname");
        surname.setContent(stats[0]);
        player.addChild(surname);
       
        Element battingAverage = new Element("batting_average");
        battingAverage.setContent(formattedAverage);
        player.addChild(battingAverage);
   
        root.addChild(player);
        
      }  
      
      
      Document doc = new Document(root);
      // serialize it into a file
      FileOutputStream fout 
       = new FileOutputStream("battingaverages.xml");
      
      XMLOutputter serializer = new XMLOutputter(); 
      serializer.output(doc, fout);
      fout.flush();	
      fout.close();
      in.close();

    }
    catch (IOException e) {
      System.err.println(e);
    }
    catch (ArrayIndexOutOfBoundsException e) {
      System.out.println("Usage: java BattingAverage input_file.tab");
    }

  }

  public static String[] splitLine(String playerStats) {
    
    // count the number of tabs
    int numTabs = 0;
    for (int i = 0; i < playerStats.length(); i++) {
      if (playerStats.charAt(i) == '\t') numTabs++;
    }
    int numFields = numTabs + 1;
    String[] fields = new String[numFields];
    int position = 0;
    for (int i = 0; i < numFields; i++) {
      StringBuffer field = new StringBuffer();
      while (position < playerStats.length() 
       && playerStats.charAt(position++) != '\t') {
        field.append(playerStats.charAt(position-1));
      }
      fields[i] = field.toString();
    }    
    return fields;
    
  }

}