Populating an arrayList after reading from a text file

[nupreti]

import java.io.*;
import java.util.*;

public class ReadTextFile {

  /**
  * Fetch the entire contents of a text file, and return it in a String.
  * This style of implementation does not throw Exceptions to the caller.
  *
  * @param aFile is a file which already exists and can be read.
  */
  static public ArrayList getContents(File aFile) {
	  ArrayList arData = new ArrayList();
    //...checks on aFile are elided    
    try {
      //use buffering, reading one line at a time
      //FileReader always assumes default encoding is OK!
      BufferedReader input =  new BufferedReader(new FileReader(aFile));
      try {
        String line = null; //not declared within while loop
        /*
        * readLine is a bit quirky :
        * it returns the content of a line MINUS the newline.
        * it returns null only for the END of the stream.
        * it returns an empty String if two newlines appear in a row.
        */
        while (( line = input.readLine()) != null){
		  int index =line.indexOf(':');
		  if(index != -1 )
		  {
			arData.add(line.substring(0,index));//name
			arData.add(line.substring(index+1,line.length()));//value
		  }
        }
      }
      finally {
        input.close();
      }
    }
    catch (IOException ex){
      ex.printStackTrace();
    }
	return arData;
  }
  /** Simple test harness.   */
  public static void main (String [] args) throws IOException {
	  String fName="Demo.txt";
	  if (args.length >0)
	  {
		  fName=args[0];
	  }
	  File testFile = new File(fName);
	  System.out.println(getContents(testFile));
  }
}

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