The Inventory System Implement the class diagram and the sequence diagram. [Help

Question

The Inventory System Implement the class diagram and the sequence diagram.

[Help modify the source code]:

import java.util.Scanner;

// Product class

public class Product
{
   private String name;
   private int productNum;
   private int barCode;
  
   public Product(String p_name, int p_num, int p_bar)
   {
       name = p_name;
       productNum = p_num;
       barCode = p_bar;
   }
}

// User Class

public class User
{
   private int id;
  
   public User(int a)
   {
       id = a;
   }
  
   public void scan()
   {
      
   }
}

//Driver Class

public class driver

{
   public static void main( String[] args )
   {
       Product p1 = new Product("product01", 012, 0123212);
       User u1 = new User(01);
   }
}

Product User String: name int: productNum int barCode Driver int: id +scan +toString0: String +main(Stringl] args) +scan0 +toString0: String Error String: message +toString0: String

Explanation / Answer

import java.util.Scanner;

// Product class
public class Product {
   private String name;
   private int productNum;
   private int barCode;

   public Product() {
       // TODO Auto-generated constructor stub
   }

   public Product(String p_name, int p_num, int p_bar) {
       name = p_name;
       productNum = p_num;
       barCode = p_bar;
   }

   public void scan() {

       Scanner scanner = null;

       try {
           scanner = new Scanner(System.in);

           System.out.print("Enter product name:");
           this.name = scanner.next();

           System.out.print("Enter product number:");
           this.productNum = scanner.nextInt();

           System.out.print("Enter product barcode:");
           this.barCode = scanner.nextInt();

       } catch (Exception e) {
           // TODO: handle exception
       }

   }

   /*
   * (non-Javadoc)
   *
   * @see java.lang.Object#toString()
   */
   @Override
   public String toString() {
       return "Product [name=" + name + ", productNum=" + productNum
               + ", barCode=" + barCode + "]";
   }

}

import java.util.Scanner;

public class User {
   private int id;

   public User() {
       // TODO Auto-generated constructor stub
   }

   public User(int a) {
       id = a;
   }

   public void scan() {

       Scanner scanner = null;

       try {
           scanner = new Scanner(System.in);

           System.out.print("Enter user id:");
           this.id = scanner.nextInt();

       } catch (Exception e) {
           // TODO: handle exception
       }

   }

   /*
   * (non-Javadoc)
   *
   * @see java.lang.Object#toString()
   */
   @Override
   public String toString() {
       return "User [id=" + id + "]";
   }

}

public class Error extends Exception {

   private String message;

   /**
   * @param message
   */
   public Error(String message) {
       super(message);
       this.message = message;

   }

   /*
   * (non-Javadoc)
   *
   * @see java.lang.Object#toString()
   */
   @Override
   public String toString() {
       return "Error [message=" + message + "]";
   }

}

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

       Product p1 = new Product("product01", 12, 123212);
       Product p2 = new Product();
       User u = new User();
       p2.scan();
       u.scan();

       System.out.println(p1);
       System.out.println(p2);
       System.out.println(u);

   }
}

OUTPUT:

Enter product name:prod02
Enter product number:13
Enter product barcode:123321
Enter user id:1
Product [name=product01, productNum=12, barCode=123212]
Product [name=prod02, productNum=13, barCode=123321]
User [id=1]

NOTE: please share details/conditions about using Error class

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