sample.txt contains data in (double space) separated value format:

pizza  very cheesy  12.30  3
salad  cobb salad  15.50  12
hunger burger  huge patty  9.49  10
fried chicken  so crispy  18.99  5

An abstract class TheSystem should contain the private instance variable specified in TABLE 2 with associated GETTER and SETTER.

TABLE 2:

Datatype	Name	Description
HashMap	itemCollection	Provides the list of items in the system or the cart depending on which class initiates it

The following constructor must be implemented:

Description

Input Parameters

This This constructor initializes the itemCollection variable with an empty hashmap..   It then checks if the AppSystem is invoking the constructor (getClass().getSimpleName().equals("AppSystem")),   if so, it adds the items from the sample.txt file to the itemCollection.     Recommended: When reading from the sample.txt file,   read each line and do the following line: String[] itemInfo = line.split("\s ");

None

package com.example;

 

import java.io.File;

import java.io.FileNotFoundException;

import java.util.HashMap;

import java.util.Scanner;

 

public abstract class TheSystem {

  

 

    TheSystem() {

        // Your code here

    }

   

    public HashMap getItemCollection(){

        // Your code here

    }

   

    public Boolean checkAvailability(Item item) {

        // Your code here

    }

   

    public Boolean add(Item item) {

        // Your code here

    }

 

    public Item remove(String itemName) {

        // Your code here

    }

 

    public abstract void display();

}