LineBreaker.java

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

public class LineBreaker
{
    public static void main(String[] args) 
    {
        if (args.length < 1) {
            System.err.println("Give the name of the file as an argument.");
            System.exit(1);
        }
        
        BufferedReader in = null;
        String line = null;
        try {
            in = new BufferedReader(new FileReader(args[0]));
            line = in.readLine();
        } catch (Exception e) {
            e.printStackTrace();
        }
        
        String lines = line.replaceAll(",0", "\n"); // insert newlines
        lines = lines.replaceAll(",", "\t");        // insert tabs

        System.out.print(lines);
        
    }
}