Question

Grocery Store using Java Arraylist

Requirements:

1. Need Product Class and Stock Class

2. Use arraylist to store/ add product in stock

3. Product must have name, code number and quantity in stock

4. Print list of the products and their stock quantity

5. Search products based on their name 6. Remove product based on their code number

7. Sell product and deduct quantity from stock

8. Stock Class contains methods of search product, add product and check quantity of the product

9. Product Class contains method of get product details

Answer 1

please find the code for the same:

package store;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class Stock {
   public List<Product> productList=new ArrayList<Product>();
   public static void main(String[] args) {
       Stock stock=new Stock();
      
       for(int i=0;i<5;i++) {
       Product product=new Product("Product"+i,"CodeNumber"+i,500+i);
       stock.productList.add(product);
       }      
       stock.printProducts();
       //add product
       Product newproduct=new Product("Product New","CodeNumber New",800);
       stock.addProduct(newproduct);
       System.out.println("printing after adding new product");
       stock.printProducts();
       //searching
       System.out.println("Searched Product By Name:"+stock.searchProduct("Product New").getName());
       //sell product and deduct quantity
       stock.sellProductAndDeductQuantity(newproduct, 15);
       //check quantity of product
       System.out.println("Quantity of New Product after selling:"+stock.checkQuantityOfProduct(newproduct));
       //remove product
       stock.removeProduct(newproduct.getCodeNumber());
       System.out.println("printing after removing new product");
       stock.printProducts();
      
   }
  

   public void printProducts() {
       for(Product product:productList) {
           product.getProductdetail();
       }
      
   }
   public Product searchProduct(String name) {
       for(Product product:productList) {
           if(product.getName().equals(name)) {
               return product;
           }
       }
       return null;
   }
  
   public void removeProduct(String codeNumber) {      
       Iterator<Product> itr =productList.iterator();
       while(itr.hasNext()) {
           Product pro=(Product)itr.next();
           if(pro.getCodeNumber().equals(codeNumber)) {
               itr.remove();
           }
       }
   }
   public void addProduct(Product pro) {
       productList.add(pro);
   }
  
   public Integer checkQuantityOfProduct(Product pro) {
       for(Product product:productList) {
           if(product.getName().equals(pro.getName())&&product.getCodeNumber().equals(pro.getCodeNumber())) {
               return product.getStockQuantity();
           }
       }
       return null;
   }
  
   public boolean sellProductAndDeductQuantity(Product pro, Integer quantity) {
       for(Product product:productList) {
           if(product.getName().equals(pro.getName())&&product.getCodeNumber().equals(pro.getCodeNumber())) {
               if(product.getStockQuantity()>=quantity) {
                   product.setStockQuantity(product.getStockQuantity()-quantity);
                   return true;
               }
           }
       }
       return false;
   }

}

package store;

public class Product {
   private String name;
   private String codeNumber;
   private Integer stockQuantity;
  
   public Product(String name,String codeNumber,Integer stockQuantity) {
       this.name=name;
       this.codeNumber=codeNumber;
       this.stockQuantity=stockQuantity;
   }

   public String getName() {
       return name;
   }

   public void setName(String name) {
       this.name = name;
   }

   public String getCodeNumber() {
       return codeNumber;
   }

   public void setCodeNumber(String codeNumber) {
       this.codeNumber = codeNumber;
   }

   public Integer getStockQuantity() {
       return stockQuantity;
   }

   public void setStockQuantity(Integer stockQuantity) {
       this.stockQuantity = stockQuantity;
   }
  
   public void getProductdetail() {
       System.out.println("Product Name:"+getName()+" |Product Code Number:"+getCodeNumber()+" |Product Quantity:"+getStockQuantity());
   }
  

}