About this Course

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The Kotlin programming language is a modern language that gives you more power for your everyday tasks. Kotlin is concise, safe, pragmatic, and focused on interoperability with Java code. It can be used almost everywhere Java is used today: for server-side development, Android apps, and much more. Kotlin is 100% compatible with all existing Java frameworks, and has good tooling support. It’s a pragmatic language with a very low learning curve, and can be quickly grasped by Java developers. Kotlin code might be compiled not only to JVM bytecode but to JavaScript and Native code as well, but this course is focused on Kotlin/JVM.
This course aims to share with you the power and the beauty of Kotlin. We'll have a basic overview of the language, as well as a discussion of many corner cases, especially concerning Java interoperability. The course is based on your Java experience; it shows the similarities between the two languages and focuses on what's going to be different. 
Note that this course won't cover the programming fundamentals. We'll discuss: basic syntax, nullability, functional programming with Kotlin, object-oriented programming with Kotlin, the power of the Kotlin standard library, and Java interoperability.

Learner Career Outcomes

15%

got a tangible career benefit from this course

12%

got a pay increase or promotion

Shareable Certificate

Earn a Certificate upon completion

100% online

Start instantly and learn at your own schedule.

Flexible deadlines

Reset deadlines in accordance to your schedule.

Intermediate Level

Approx. 25 hours to complete

English

Subtitles: Arabic, French, Portuguese (European), Chinese (Simplified), Italian, Vietnamese, Korean, German, Russian, Turkish, English, Spanish

Instructors

Instructor rating

4.56/5 (273 Ratings)

Svetlana Isakova

Developer Advocate

Kotlin

63,568 Learners

1 Course

Andrey Breslav

Kotlin Project Lead

Kotlin

63,568 Learners

1 Course

Learner Career Outcomes

15%

got a tangible career benefit from this course

12%

got a pay increase or promotion

Shareable Certificate

Earn a Certificate upon completion

100% online

Start instantly and learn at your own schedule.

Flexible deadlines

Reset deadlines in accordance to your schedule.

Intermediate Level

Approx. 25 hours to complete

English

Subtitles: Arabic, French, Portuguese (European), Chinese (Simplified), Italian, Vietnamese, Korean, German, Russian, Turkish, English, Spanish

Syllabus - What you will learn from this course

Content Rating92%(7,492 ratings)

Week

1

Week 1

13 minutes to complete

Introduction

13 minutes to complete

4 videos (Total 13 min)

4 videos

Introduction to the course2m

What is Kotlin?4m

History of Kotlin3m

Developing Kotlin2m

Week

2

Week 2

4 hours to complete

Starting up with Kotlin

4 hours to complete

17 videos (Total 73 min), 1 reading, 1 quiz

17 videos

From Java to Kotlin7m

Introducing Kotlin to an existing project2m

"Hello, world" example4m

Variables5m

Functions3m

Named & default arguments5m

Conditionals: if & when5m

Loops2m

'in' checks & ranges4m

Exceptions3m

Extension Functions4m

Examples from the Standard Library8m

Calling Extensions3m

Importance of extensions3m

Solution: Mastermind2m

Solution: Checking identifier3m

Solution: Sum as an extension function58s

1 reading

Setting up programming assignments10m

Week

3

Week 3

7 hours to complete

Nullability, Functional Programming

7 hours to complete

19 videos (Total 92 min), 1 reading, 2 quizzes

19 videos

Nullable types10m

Nullable types under the hood4m

Safe casts2m

Importance of nullability2m

Lambdas3m

Common Operations on collections6m

Operations Quiz - I4m

Operations Quiz - II7m

Function Types5m

Member References6m

return from Lambda5m

Is Kotlin a functional language?1m

Solution: Nice String6m

Solution: Taxi Park, tasks 1-35m

Solution: Taxi Park, tasks 4 & 58m

Solution: Taxi Park, task 62m

Solution: Checking whether string is null or empty2m

Solution: Safe casts59s

Solution: Interchangeable predicates3m

1 reading

Mastermind in a functional style1m

Week

4

Week 4

7 hours to complete

Properties, OOP, Conventions

7 hours to complete

19 videos (Total 99 min)

19 videos

Properties7m

More about Properties4m

Lazy or late initialization5m

OOP in Kotlin4m

Constructors, Inheritance syntax6m

Class modifiers - I4m

Class modifiers - II5m

Objects, object expressions & companion objects6m

Constants4m

Generics6m

OOP design choices5m

Operator Overloading3m

Conventions8m

(Not)using operator overloading2m

Solution: Rationals15m

Solution: Unstable val2m

Solution: Using lateinit property1m

Solution: NPE during initialization4m

Solution: Equality2m

Frequently Asked Questions

When will I have access to the lectures and assignments?
Access to lectures and assignments depends on your type of enrollment. If you take a course in audit mode, you will be able to see most course materials for free. To access graded assignments and to earn a Certificate, you will need to purchase the Certificate experience, during or after your audit. If you don't see the audit option:
The course may not offer an audit option. You can try a Free Trial instead, or apply for Financial Aid.
The course may offer 'Full Course, No Certificate' instead. This option lets you see all course materials, submit required assessments, and get a final grade. This also means that you will not be able to purchase a Certificate experience.
What will I get if I purchase the Certificate?
When you purchase a Certificate you get access to all course materials, including graded assignments. Upon completing the course, your electronic Certificate will be added to your Accomplishments page - from there, you can print your Certificate or add it to your LinkedIn profile. If you only want to read and view the course content, you can audit the course for free.
Is financial aid available?
Yes, Coursera provides financial aid to learners who cannot afford the fee. Apply for it by clicking on the Financial Aid link beneath the "Enroll" button on the left. You’ll be prompted to complete an application and will be notified if you are approved. Learn more.

More questions? Visit the Learner Help Center.

Kotlin for Java Developers