CustomerCreatorAndWriter.java

package com.doing.more.java.example;

import java.util.Scanner;
import java.io.PrintWriter;
import java.io.File;
public class CustomerCreatorAndWriter {
    Customer[] customers = new Customer[5];
    public CustomerCreatorAndWriter(){

    }
    public void buildCustomers() throws Exception{
        for(int i = 0; i < 5; i++){
            Scanner systemInScanner = new Scanner(System.in);
            System.out.printf("Enter the customer's name\n");
            String aName = systemInScanner.nextLine();
            System.out.printf("Enter %s's age\n", aName);
            int anAge = systemInScanner.nextInt();
            System.out.printf("How many years has %s been a customer?\n", aName);
            double someYears = systemInScanner.nextDouble();
            Customer aCustomer = new Customer(aName,anAge,someYears);
            this.customers[i] = aCustomer;
        }
    }
    public void saveCustomers() throws Exception{
        File customersFile = new File("customer.data");
        PrintWriter customerWriter = new PrintWriter(customersFile);
        for(int i = 0; i < 5; i++){
            Customer aCustomerToPrint = customers[i];
            customerWriter.printf("%d %f %s\n",aCustomerToPrint.age, aCustomerToPrint.years, aCustomerToPrint.name);
            customerWriter.flush();
        }
    }
    public static void main(String[] args) throws Exception{
        CustomerCreatorAndWriter aCreatorWriter = new CustomerCreatorAndWriter();
        aCreatorWriter.buildCustomers();
        aCreatorWriter.saveCustomers();
    }
}