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Oh thank you so much I found the problem it was a careless mistake of lowercase and uppercase sensitivity.

Scanner readFile = new Scanner(new FileReader("C:\\Users\\user\\Documents\\DIT MKJB\\Programming Java\\customer.txt"));

PrintWriter writefile = new...

while(readFile.hasNext())
{
ReceiptNo = readFile.nextDouble();
PaymentTerm = readFile.next();
CustomerName = readFile.next();
ItemNo = readFile.next();
ItemName =...

Cannot Find Symbol - Variable writeFile

And also I took a print screen just in case.

import java.util.*;
import java.io.*;
import java.util.Arrays;
public class Assignment2
{
public static void main(String[]args ) throws FileNotFoundException
{
String[] A= {"Aaron...