Working with Nulls in Java

By Esteban Herrera
Learn the best practices and techniques to handle nulls effectively in Java.
Play course overview
Course info
Level
Intermediate
Updated
Dec 30, 2019
Duration
1h 13m
Table of contents
Course Overview
Course Overview 1m
Working with Reference Types and Nulls
Introduction 3m Null and Reference Types 5m Traditional Ways of Dealing with Nulls 3m Best Practices for Data That You Don't Control 6m Best Practices for Data That You Control 2m Summary 3m
Checking for Null Using Annotations
Introduction 4m Spring Annotations 6m Bean Validation Annotations 5m Project Lombok Annotations 5m Final Thoughts 2m
Using the Null Object Pattern
Understanding the Null Object Pattern 3m Implementing the Null Object Pattern 4m Criticisms of the Null Object Pattern 2m Things to Remember 2m
Using Optional Instead of Null
The Optional Type 4m Optional Type Good Practices 4m Using the Optional Type 3m Things to Keep in Mind About the Optional Type 2m Course Summary 5m
Description
Course info
Level
Intermediate
Updated
Dec 30, 2019
Duration
1h 13m
Description

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.

About the author
Esteban Herrera
About the author

Esteban Herrera has more than twelve years of experience in the software development industry. Having worked in many roles and projects, he has found his passion in programming with Java and JavaScript. Nowadays, he spends all his time learning new things, writing articles, teaching programming, and enjoying his kids.

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Section Introduction Transcripts
Section Introduction Transcripts

Course Overview
[Autogenerated] Hi, everyone. My name is Esteban Karada. Work onto my course working with nose in Java. I've been working with Jabba for more than 10 years. I love the language and teaching all I know about it. How many times have you thought the Soviet can never be? No. Just to be proving wrong with an ugly no point in reception. When you run your program, I bet more than one time, right. The fact is, no point. The reception is one of the most common exceptions in Java programs. In this course, you're going to learn good practices and techniques for effectively handling Knowles and avoid no point. The receptions. Some of the major topics that we will cover includes what exactly is no checking for? No using imitations. They know of your pattern and using optionals instead of nose. By the end of discourse, you'll know how to deal with nose effectively. Before beginning the course, you should have at least a basic knowledge of Jeff eight or above. I hope you join me on this journey to learn howto handle Nell's effectively with the course, working with nose in Java at your insight

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