/**********************************************************************
 * Author:        Eric Heim
 * Date Created:  7/14/2011
 * Course:        CS0007
 * Description:   Shows the use of the exists method to warn a user
 *                that she is about to overwrite a file
 **********************************************************************/

import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Scanner;

public class WriteExists {
	public static void main(String[] args) throws FileNotFoundException {
		Scanner keyboard = new Scanner(System.in);
		File myFile;
		PrintWriter outputFile;
		String filename;
		char response = 'N';
		
		System.out.print("Enter the name of the file you wish to " +
				           "write a message to: ");
		filename = keyboard.nextLine();
		
		myFile = new File(filename);
		
		while(myFile.exists() && response != 'Y') {
			System.out.print("Warning! You are about to overwrite " + filename +
					           " is this OK? (Y or N): ");
			response = keyboard.nextLine().toUpperCase().charAt(0);
			
			if(response != 'Y') {
				System.out.print("Enter the name of the file you wish to " +
		           "write a message to: ");
				filename = keyboard.nextLine();

				myFile = new File(filename);
			}
		}
		
		outputFile = new PrintWriter(myFile);
		
		outputFile.println("Java is fun!");
		
		outputFile.close();
		
	}

}