// This program will read in a file from the command line
// and write it out to the screen.
// To run program from the command line type: java Rwtest testfile.txt
// Distributed under the GNU GPL: www.gnu.org

// import the input/output package
import java.io.*;

public class Rwtest {
	public static void main(String args[]) throws IOException
	{
	if (args.length == 0)
		{
 	  System.out.println("Please enter a file name on the command line");
		System.exit(0);
		}
     // Take the file at position 0 in the 'args' array that was typed in on the
     // command line and place it into File object 'alpha'
	File alpha = new File(args[0]);
	// Pass File object 'alpha' into FileReader object 'bravo'
	FileReader bravo = new FileReader(alpha);
	// Pass FileReader object 'bravo' into BufferedReader object
	// 'charlie' to make it more efficient
	BufferedReader charlie = new BufferedReader(bravo);

	// Create new file to write to called Writetest.txt
	// and place it in object kilo
	File kilo = new File("Writetest.txt");
	// Pass object kilo into FileWriter golf 
	FileWriter golf = new FileWriter(kilo);
	// Pass object golf into BufferedWriter hotel to make it more
	// efficient in writing
	BufferedWriter hotel = new BufferedWriter(golf);
	// Pass object hotel into PrintWriter object juliet
	PrintWriter juliet = new PrintWriter(hotel);

	int delta;
	// Read each character from the file in BufferedReader 'charlie'
	// and place it into String variable 'delta' 
	// continue doing this until there is no text left 
	// ie: reads in a -1 value 
		while((delta=charlie.read())!=-1)
		{
	// Print out the integer read into 'delta' to the screen
		System.out.println("The integer just read in is: " + delta);	
	// Write integer to object 'juliet' which eventually
	// writes it to 'Writetest.txt' file
		juliet.write(delta);
	// Write integer to screen again after having written
	// it to file
		System.out.println("Writing " + delta + " to file.");
		} // end while
	// close the file in BufferedReader object 'charlie'
		charlie.close();
	// close the PrintWriter object 'juliet' 
	// that was just written to hard drive
		juliet.close();

	} // end main method

}  // end class Rwtest