Part 1: Avoiding Null-Pointer Exceptions in a Modern Java Application

A too familiar scenario

Null do’s and don’ts

In the talk Null References: The Billion Dollar Mistake, Sir Tony Hoare describes implementing null references as a part of the ALGOL programming language, as well, a billion-dollar mistake. Authoritative programming books like Clean Code: A Handbook of Agile Software Craftsmanship advise you to use null as…