Question

In java Lets say theres a ArrayList of products that have the variables name, price and stock. The user must be able to select which product he wants to buy and how many times he wants to buy them. Once the purchase process ends, it will update the latest quantity to the Product’s stock count. Create a Java Program with the above requirement

Answer 1

// Java Code:

import java.util.*;
public class Main
{
   public static void main(String[] args) {
   // Creating 3 ArrayList each store Product_Name , stock and the price.
   ArrayList<String> variable_name=new ArrayList<String>();
   ArrayList<Integer> price=new ArrayList<Integer>();
   ArrayList<Integer> stock=new ArrayList<Integer>();
  
   // Add the detail of Product 1
   variable_name.add("Product1");
   price.add(10);
   stock.add(100);
  
   // Add the detail of Product 2
   variable_name.add("Product2");
   price.add(20);
   stock.add(80);
  
   // Add the detail of Product 3
   variable_name.add("Product3");
   price.add(30);
   stock.add(50);
  
   // Print the Intial stock of each product
   System.out.println("Product_Name price stock");
   for(int i=0;i<3;i++)
   System.out.println(variable_name.get(i)+" "+price.get(i)+" "+stock.get(i));
  
   // User input the purchase Detail which product to buy   
   Scanner in=new Scanner(System.in);
   System.out.print("Which Product you want to buy : ");
   String str=in.nextLine();
  
   // User input the quantity of product to buy.
   System.out.print("How many times you want to buy : ");
   int t=in.nextInt();
  
   // Print the cost of purchase and update the stock of respective product.
   for(int i=0;i<3;i++)
   {
   if(str.equals(variable_name.get(i)))
   {
   System.out.println("The Total price of your purchase : "+(t*price.get(i)));
   stock.set(i,stock.get(i)-t);
   break;
   }
   }
  
   // Print the stock detail after purchase.
   System.out.println("The stock after purchase are:");
   System.out.println("Product_Name price stock");
   for(int i=0;i<3;i++)
   System.out.println(variable_name.get(i)+" "+price.get(i)+" "+stock.get(i));
   }
}

7 8 Main.java 1 import java.util.*; 2 public class Main 3-{ 4. public static void main(String[] args) { 5 // Creating 3 ArrayList each store product_name , stock and the price. 6 ArrayList<string> variable_name=new ArrayList<string>(); ArrayList<Integer> price=new ArrayList<Integer>(); ArrayList<Integer> stock=new ArrayList<Integer>(); 9 10 // Add the detail of Product 1 11 variable_name.add("Product1"); 12 price.add(10); 13 stock.add(100); 14 15 // Add the detail of Product 2 16 variable_name.add("Product2"); 17 price.add(20); 18 stock.add(80); 19 20 // Add the detail of Product 3 21 variable_name.add("Product3"); 22 price.add(30); 23 stock.add(50); 24 25 // Print the Intial stock of each product 26 System.out.println("product_name price stock"); 27 for(int i=0;i<3;i++) 28 System.out.println(variable_name.get(i)+" "+price.get(i)+" 29 30 // User input the purchase Detail which product to buy 31 Scanner in=new Scanner(System.in); 32 System.out.print("Which Product you want to buy : "); 33 String str=in.nextLine(); 34 35 // User input the quantity of product to buy. 36 system.out.print("How many times you want to buy : "); "+stock.get(i));

int t=in.nextInt(); 37 38 39 40 41 42 43- // Print the cost of purchase and update the stock of respective product. for(int i=0;i<3;i++) { { 44 45 46 47 if(str.equals(variable_name.get(i))) system.out.println("The Total price of your purchase : "+(t*price.get(i))); stock.set(i,stock.get(i)-t); break; } } 48 49 50 51 52 53 54 55 56 // Print the stock detail after purchase. System.out.println("The stock after purchase are:"); System.out.println("Product_Name price stock"); for(int i=0;i<3;i++) system.out.println(variable_name.get(i)+" "+price.get(i)+" "+stock.get(i)); } input Product Name price stock Producti 10 100 Product2 20 80 Product3 30 50 Which Product you want to buy : Product2 How many times you want to buy : 20 The Total price of your purchase : 400 The stock after purchase are: Product Name price stock Producti 10 100 Product2 20 60 Product3 30 50 - .. Program finished with exit code 0 Press ENTER to exit console.