Prog3b.java

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

public class Prog3b {

    public static void main(String[] args) {
        System.out.println("Program 3, Dennis Thompson, masc001");
        if(args.length != 2) {
            System.err.println("Usage: java Prog3b infileName outfileName");
            System.exit(1);
        }

        Scanner handle = null;
        PrintWriter out = null;

        try {
            handle = new Scanner(new File(args[0]));
        } catch(java.io.FileNotFoundException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }

        try {
            out = new PrintWriter(System.getProperty("user.dir") + "/" + args[1], "UTF-8");
            while(handle != null && handle.hasNextLine()) {
                out.println(handle.nextLine().replace(' ', ','));
            }
            out.close();
        } catch(java.io.IOException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        } finally {
            out.close();
            handle.close();
        }
    }

}