How many times have you thought “this object can never be null” only to be proven wrong? In this course, Working with Nulls in Java, you’ll learn best practices for effectively handling nulls and avoid NullPointerExceptions. First, you’ll see what nulls mean and some common ways to deal with them. Next, you’ll explore how to use annotations to check for nulls. Finally, you’ll discover how to use the Null Object pattern and the Optional type to reduce unexpected exceptions even further. When you’re finished with this course, you’ll understand the different techniques to handle nulls effectively in Java programs.
Author Name: Esteban Herrera
Author Description:
Esteban Herrera has more than fifteen years of experience in the software development industry. He has worked in many roles and projects, but mostly architecting and developing enterprise systems with Java and Javascript. Nowadays, he spends all of his time learning new things, writing articles, teaching programming, and enjoying his kids.

Table of Contents

• Course Overview
  1min
• Working with Reference Types and Nulls
  21mins
• Checking for Null Using Annotations
  21mins
• Using the Null Object Pattern
  11mins
• Using Optional Instead of Null
  16mins