Shopping Basket Calculator Service

This service scans the shopping basket and generates a bill based on different prices and offers.

Description

This project implements a Strategy Pattern, wherein strategy for calculating the price of an 'Item' in the shopping basket, is decided dynamically. Currently three strategies are created - Fixed Price Strategy, 'Buy One Get One Free Strategy' and 'Buy Three for the Price of Two'. Based on the Strategy and the price of an item, a final price is calculated for each item.

Getting Started

Dependencies

Java 8 or above

Executing program

• The main class is 'com.shopping.basket.app.main.ShoppingBasketCalculatorService.java'
• Start the Java Application. Read the instructions on the Console.
• On the console, type in the item name to add Items to Shopping Basket.
• Once the required items are added, double press 'Enter' key in Windows or 'return' key in MAC OS.
• Final bill will be displayed on the console.

Limitations

• Shopping Basket can carry only 100 items at a time.
• Only one item can be presented at a time.
• Items can be identified only by their given names.
• Final Bill is available only in Pounds.
• Accuracy of final bill can be considered up to the second decimal point.

Assumptions

• Items once added to the basket need not be modified or removed.
• Offers and Prices of items can change frequently but no implementation/interface is needed for it right now.
• Unknown items can be ignored till they are added to the Application.
• Database is not available.

Version History

• 0.2
  • Code optimizations and re-factoring
• 0.1
  • Initial Commit