Java Programming: \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ShoppingCartDriver.java\\\\\\\

Question

Java Programming:

\\\\\\\\ShoppingCartDriver.java\\\\\\\\\\\\

public class ShoppingCartDriver {
  
   public static void main(String[] args) {
      
       //Create a shopping cart
       ShoppingCart cart = new ShoppingCart();
      
       //create different items
       Item item1 = new Item("butter", 4, 2);
       Item item2 = new Item("milk", 5, 3);
       Item item3 = new Item("eggs", 10, 3);
       Item item4 = new Item("cheese", 20, 2);
      
       //add items to the cart
       cart.addItem(item1);
       cart.addItem(item2);
       cart.addItem(item3);
       cart.addItem(item4);
      
       //Display content of the cart
       System.out.println(cart);
      
       //Delete item4 from the cart
       cart.deleteItem(item4);
       //Display content of the cart
       System.out.println(cart);
      
       //Modify item1's name, when you this method
       //item1's name will be set to UNKNOW
       cart.modifyItem(item1);
       //Display content of the cart
       System.out.println(cart);
   }

}

\\\\\\\\\\Output\\\\\\\\\\\

Explanation / Answer

// Item.java

import java.text.NumberFormat ;

public class Item {
private String name ;
private double price ;
private int quantity ;

// default constructor
public Item( String productName ,double productPrice ,int numPurchased ) {
   name= productName ;
   price= productPrice ;
   quantity= numPurchased ;
}

// Quantity of the product
public int getQuantity ( ) {
   return quantity ;
}

// Rate of the product
public double getPrice ( ) {
   return price ;
}

// Name of the product
public String getName ( ) {
   return name ;
}

// Data about the product
public String toString () {
   NumberFormat format =NumberFormat.getCurrencyInstance ( ) ;

   return ( name +" " +format.format ( price ) +" " +quantity +" " +format.format ( price * quantity ) ) ;
}

}

// ShoppingCart.java

import java.util.Scanner ;
import java.text.NumberFormat ;
import java.util.ArrayList ;

public class ShoppingCart
{
public static void main( String args[] ) {

// declare an empty ArrayList variable
   ArrayList< Item > Shop =new ArrayList< Item > ( ) ;

Item product ;
String productName ;
double productPrice ;
int quantity ;
double total =0.0 ;
   double totalSum =0.0 ;
Scanner input =new Scanner ( System.in ) ;
String continue =" yes " ;
do {
System.out.print( " Type d name of d product : " ) ;
productName =input.nextLine ( ) ;
System.out.print( " Type d unit price : " ) ;
productPrice = input.nextDouble ( ) ;
System.out.print( " type d quantity : " ) ;
quantity= input.nextInt ( ) ;
// develop a new product and add it to the Shop
        product =new Item( productName ,productPrice ,quantity ) ;
           Shop.add ( product ) ;
          
          
// display the result of the Shop object using println
           for( int i =0 ;i< Shop.size ( ) ;i++ ) {
               Item prdct = Shop.get ( i ) ;
               System.out.println ( prdct ) ;
           }

       // display out the results
           System.out.print( " Keep shopping ( yes / no ) ? " ) ;
input.nextLine ( ) ;
continue = input.nextLine ( ) ;
}
   while( continue.equals ( " yes " ) ) ;
          
          
           for( int i =0 ;i <Shop.size ( ) ;i++ )   {
               Item prdct = Shop.get ( i ) ;
               System.out.println ( prdct ) ;
               total = prdct.getQuantity ( ) *prdct.getPrice ( ) ;
               totalSum +=total ;
           }
          
           NumberFormat format =NumberFormat.getCurrencyInstance ( ) ;
          
           System.out.println ( " The total rate is : " +format.format ( totalSum ) ) ;

}
}

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