//FileReadChars2.java

import java.util.Scanner;
import java.io.FileReader;
import java.io.IOException;

public class FileReadChars2
{
    public static void main(String[] args)
    {
        Scanner scnr = new Scanner(System.in);
        FileReader fileReader = null; // FileReader for reading chars
        String fileName; // User defined file name
        int charRead;    // Data read from file

        charRead = 0;

        // Get file name from user
        System.out.print("Enter a valid file name: ");
        fileName = scnr.next();

        try
        {
            // Prompt user for input
            System.out.println("Opening file " + fileName + ".");
            // May throw FileNotFoundException
            fileReader = new FileReader(fileName);

            // Use file input stream
            System.out.print("Reading character values: ");
            while (charRead != -1) // -1 means end of file has been reached
            {
                charRead = fileReader.read(); // May throw IOException
                System.out.print(charRead + " ");
            }
        }
        catch (IOException excpt)
        {
            System.out.println("Caught IOException: " + excpt.getMessage());
        }

        // Done with file, so try to close it
        try
        {
            if (fileReader != null)
            {
                System.out.println("\nClosing file " + fileName + ".");
            }
        }
        catch (IOException excpt)
        {
            System.out.println("Caught IOException: " + excpt.getMessage());
        }
        fileReader.close(); // close() may throw IOException if fails
    }
}