/*
 *  T03n03.java -- The Scanner class provides a pair of line-of-text
 *  methods that makes the task of reading lines almost trivial.
 *  Be sure to run T03n02.java first, to create the input file used by
 *  this program.
 *
 *  Note that we need a File object.  Scanner does have a constructor
 *  that takes a String object, but it doesn't use that as a file name;
 *  rather, you can scan that string as if it were an input file.  That's
 *  nice, but it means you can't directly open a file using just Scanner.
 *
 *  See the next example to see how to read from a text file using
 *  pre-1.5 Java classes.
 */


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

public class T03n03
{
    public static void main (String [] args) 
    {
        final String     fileName = "T03n02.out";
        File             aFile;
        Scanner          inFile = null;    // Need to initialize to please Java
        String           aLine;

        System.out.println("Reading some text from the file '"
                       + fileName + "'...");

        aFile = new File(fileName);

        try {

            inFile = new Scanner(aFile);

        } catch (IOException e) {

            System.out.println("I/O ERROR:  Something went wrong with the "
                             + "opening of the text file.\nHere's what "
                             + "I can tell you:");
            System.out.println("  The Error: " + e.getClass().getName());
            String mesg = e.getMessage();
            if (mesg == null) {
                System.out.println("The message:  None.");
            } else {
                System.out.println("The message: " + mesg);
            }
            System.out.println("The stack trace:");
            e.printStackTrace();

        }

        System.out.println("-----------------------------------------");

        while (inFile.hasNextLine()) {  // Scanner handles lines with ease
            aLine = inFile.nextLine();
            System.out.println(aLine);
        }

        System.out.println("-----------------------------------------");
    }
}