Question

Write a Java program which asks customer name, id, address and other personal information, there are two types of customers, walk-in and credit card. The rates of items are different for both type of customers. System also asks for customer type. Depending upon customer type, it calculates total payment.
A credit-card customer will pay 5 % extra the actual price.
Use object-oriented concepts to solve the problem. Define as many items and prices as you want.
Example Output:
Enter Name of Customer: John
Enter Id: 15
Customer Type: Card
Select items:1 3 6
The total price is 560

Answer 1

Customer.java

//defining a customer class

class Customer{

String name, id, address, email, customerType;

int phone;

//parameterized constructor

public Customer(String _name, String _id, String _address, int _phone, String _email, String _customerType){

name = _name;

id = _id;

address = _address;

phone = _phone;

email = _email;

customerType = _customerType;

}

}

Item.java

class Item{

int id;

double price;

public Item(int _id, double _price){

id = _id;

price = _price;

}

}

Main.java

import java.util.*;

class Main {

public static void main(String[] args) {

Scanner scn = new Scanner(System.in);

//input user details

String _name, _id, _address, _email;

int _phone;

System.out.print("Name: ");

_name = scn.next();

System.out.print("ID: ");

_id = scn.next();

System.out.print("Address: ");

_address = scn.next();

System.out.print("Phone: ");

_phone = scn.nextInt();

System.out.print("Emial: ");

_email = scn.next();

System.out.print("Customer Type ");

String _customerType = scn.next();

//create a customer object with given details

Customer customer = new Customer(_name, _id, _address, _phone, _email, _customerType);

//add some items to our items catalog

ArrayList<Item> items = new ArrayList<>();

items.add(new Item(1, 20));

items.add(new Item(3, 50));

items.add(new Item(6, 60));

items.add(new Item(4, 90));

System.out.println("Select items");

//create a shoping cart for our customer

ArrayList<Item> cart = new ArrayList<>();

int j = 0;

//item entered by th customer are added to cart if the exist in our cataog

while(j < 3){

int item = scn.nextInt();

for(Item i : items){

if(item == i.id){

cart.add(i);

}

}

j++;

}

//after all items are added to the cart we begin calculating the price

double price = 0;

for(Item i: cart){

price += i.price;

}

//if customer is a credit card customer than he has to pay 5% extra

if(customer.customerType.compareTo("CARD") == 0){

price += price * 0.05;

}

//output the price details

System.out.println("The total price is "+price);

}

}