package hw4proj;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

public class Main {
// identifies the target directory of the input and output text files
private static final String TARGET_DIR = "/private/tmp/";

/*
* Read the contents of the inputs file, parses them, and adds
* the necessary items to a shopping cart which is returned
* back to the calling function. If at least one problem is
* encountered (ex. invalid input file), the error message is
* written to the console and a null object is returned for the cart.
*/
public static Cart input(String inputFilePath) {
   Cart cart = new Cart();

   try {
         File file = new File(inputFilePath);
         BufferedReader br = new BufferedReader(new FileReader(file));

         boolean isFirstLine = true;

         String line;
         while ((line = br.readLine()) != null) {

            String[] tokens = line.split(" ");

            // Reserve the first line of the file as the line
            // that tells us the total number of unique items
            // we can have in the cart.
            if (isFirstLine)
            {
               int itemCount = Integer.parseInt(tokens[0]);
               cart = new Cart(itemCount);
               isFirstLine = false;
            }
            else
            {
               // Get Name
               String name = tokens[1];

               // Get Price
               double price = Double.parseDouble(tokens[2]);

               // Get Quantity
               int quantity = Integer.parseInt(tokens[5]);

               String itemTypeText = tokens[0].trim().toLowerCase();

               if (itemTypeText.equals("computer")) {
                     // Get Model
                     String model = tokens[3];

                     // Get MakeYear
                     int makeYear = Integer.parseInt(tokens[4]);

                     for (int i = 0; i < quantity; i++) {
                        cart.addItem(new Computer(name, price, model, makeYear));
                     }
               }
               else if (itemTypeText.equals("produce")) {
                     // Get Weight
                     double weight = Double.parseDouble(tokens[3]);

Consider the application for booking meeting rooms. Create a progra...