Bank Kata

Your bank is tired of its mainframe COBOL accounting software and they hired both of you for a greenfield project in your favorite programming language!

Your task is to show them that your TDD-full and your new-age programming language can cope with good ole’ COBOL!

Requirements

Write a class Account that offers the following methods:

• void deposit(int)
• void withdraw(int)
• void printStatements()

The Rules

• One level of indentation per method
• Don’t use the ELSE keyword
• Wrap all primitives and Strings
• First class collections
• One dot per line (Follow de Demeter Law)
• Don’t abbreviate
• Keep all entities small (50 lines)
• No classes with more than two instance variables
• No getters/setters/properties

For more information: Object Calisthenics PDF

Example

An example statement would be:

Date        Amount  Balance
24.12.2015   +500      500
23.8.2016    -100      400

All credits to Sandro Mancuso