Java Optional and null - Concepts, Design and Practice

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Syed Asghar

4:19:51

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1. Introduction to null and Optional

1. Welcome.mp4

01:41

2.1 Java Optional Code Used in This Course.html

2. Introduction.mp4

04:31

3. Null Concepts.mp4

01:58

4. Null Technicalities.mp4

20:38

5. Null Defaults.mp4

09:01

6. Null Storage.mp4

04:34

7. Null Design Considerations.mp4

04:00

8. Why Optional.mp4

02:57

2. Life Before Optional

1. Preventing Null Before Optional.mp4

13:50

2. What Other Languages Do.mp4

01:35

3. What is Java Optional

1. What is Optional.mp4

01:20

2. Optional Basics.mp4

13:00

3. When to Use It.mp4

02:53

4. When Not to Use It.mp4

10:25

5. Overuse of Optional.mp4

03:22

4. Optional Methods in Detail

1. IsPresent() and get().mp4

04:25

2. ifPresent().mp4

04:08

3. ifPresentOrElse().mp4

04:04

4. isPresent() and isEmpty().mp4

06:24

5. All the ORs.mp4

10:12

6. map().mp4

06:13

7. flatMap().mp4

08:20

8. filter().mp4

09:45

9. Equality.mp4

06:09

10. Similarity to Streams.mp4

03:33

11. Streams.mp4

11:51

12. Specialized Optionals.mp4

31:57

5. Alternatives to Optional

1. Null Annotations.mp4

05:25

2. One Annotation That Is Different.mp4

02:50

3. Checker Frameworks.mp4

03:52

4. Null Object Pattern.mp4

06:49

5. Java 14 Helpful NPEs.mp4

04:54

6. Null Functions.mp4

03:47

7. Is Optional a Monad.mp4

06:34

8. Guavas Alternative to Optional.mp4

03:12

9. VAVRs Alternative to Optional.mp4

05:09

10. Palatable Lambda Alternative to Optional.mp4

03:54

11. Scala Alternative to Optional.mp4

02:46

12. Haskell Alternative to Optional.mp4

02:01

13. Kotlin Alternative to Optional.mp4

03:46

14. Dart Sound Null Safety.mp4

02:06

Description

Everything you ever wanted to know about null and Optional and more

What You'll Learn?

A deep understanding of null and Optional in Java
A very strong understanding on how to design for null in your application
How to use Optional and a host of other approaches to deal with particular null use cases
How to spot common mistakes that are made when using Optional
How to spot common design mistakes when working with null

Who is this for?

Beginner Java developers

Programmers interested in null

Software developers and architects interested in designing for sensible null handling

Experienced Java developers

Java tech leads

What You Need to Know?

Some basic Java or other programming experience would be helpful but not mandatory

More details

Description
This is an in-depth look at a truly fundamental concept in Java programming - 'null' and how Optional, if used properly can address many of the issues associated with null.

Some of the questions I answer include:

Is null a bad concept or is the implementation that's the problem?
How to prevent NullPointerExceptions?
How and when should Optional be used?
What are the alternatives to Optional?
What are some key design considerations in regards to null in my application?
What are other fundamental null concepts such as the Null Object Pattern etc?
How do some other languages handle null?

I hope that by the end of the course you will have a solid understanding of what null really is so you can design and develop your applications with confidence. I want to remove those nagging doubts you may have about null.

I'm hopeful that you will have a really strong understanding of how Javas Optional can help to deal with some of the issues surrounding null and also understand how it interplays with Streams. This is often what causes a lot of the confusion. However by understanding a few core concepts I believe this can be a thing of the past and you can use these tools in the best way possible.

Who this course is for:
Beginner Java developers
Programmers interested in null
Software developers and architects interested in designing for sensible null handling
Experienced Java developers
Java tech leads

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Java

Syed Asghar

Instructor's Courses

I am a super passionate senior software developer and architect with over 20 years of development industry experience in government, insurance, new media, retail etc.At the start of my professional career, I worked at Sun Microsystems where Java was created. I still remember eagerly learning the early versions of Java when I was there.I love programming theory and practice and to create awesome projects. It's endlessly creative!

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