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Andrejs Doronins

Looking to expand your language toolkit? Watch this crash course on Kotlin - a versatile language that is a must-learn for Java developers seeking to write cleaner, more expressive and concise code.

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Looking to expand your language toolkit? Watch this crash course on Kotlin - a versatile language that is a must-learn for Java developers seeking to write cleaner, more expressive and concise code.

Java is a popular language, but it remains relatively verbose. In this course, Kotlin for Java Developers, you'll learn the fundamentals of Kotlin - a modern, pragmatic language designed to improve productivity and readability.

First, you'll explore the basic building blocks of Kotlin - variables, their types and how their declaration differs from Java.

Next, you'll learn how to write concise and expressive code with fundamental branching and looping statements and expressions, as well as how to write idiomatic Kotlin functions.

Finally, you'll learn the basics of creating Object-Oriented Kotling code.

When you’re finished with this course, you’ll have the skills and knowledge of Kotlin fundamentals needed to write idiomatic Kotlin code.

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What's inside

Syllabus

Course Overview
Starting with Kotlin
Kotlin Types and Variables
Better Branching and Looping
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Writing Idiomatic Functions
Cleaner Object-oriented Code
Course Wrap Up

Good to know

Know what's good
, what to watch for
, and possible dealbreakers
Examines Kotlin fundamentals that are highly relevant to Java developers looking to explore alternatives
Introduces Kotlin and its key features, benefiting Java developers who want to improve code quality
Emphasizes writing concise and expressive Kotlin code, addressing a common challenge with Java
Covers Object-Oriented programming in Kotlin, a core concept for developers
Provides a hands-on approach through interactive materials, which is beneficial for skill development
Assumes learners have existing Java development experience, which may not be suitable for complete beginners

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Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in Kotlin for Java Developers with these activities:
Learn Kotlin Syntax
Follow interactive tutorials to familiarize yourself with Kotlin's syntax, including variable declarations, data types, and control structures, making the transition from Java smoother.
Show steps
  • Find beginner-friendly Kotlin syntax tutorials online.
  • Work through the tutorials hands-on, coding along.
  • Experiment with different Kotlin syntax and features.
Read 'Head First Kotlin'
Gain a deeper understanding of Kotlin's core concepts and best practices by reading this comprehensive guide, reinforcing your knowledge and expanding your perspective.
Show steps
  • Purchase or borrow a copy of 'Head First Kotlin'.
  • Allocate dedicated time for reading and absorbing the content.
  • Take notes and highlight important sections for future reference.
Find a Kotlin Mentor
Pair up with an experienced Kotlin developer who can provide personalized guidance, code reviews, and support, accelerating your learning and troubleshooting journey.
Show steps
  • Identify potential mentors through online communities, LinkedIn, or local meetups.
  • Reach out to your selected mentors and schedule an initial meeting.
Five other activities
Expand to see all activities and additional details
Show all eight activities
Review Object-Oriented Programming Skills
Refresh your understanding of basic OOP concepts, including classes, objects, inheritance, and polymorphism, to enhance your understanding of Kotlin's object-oriented features.
Show steps
  • Review class definitions, constructors, and methods.
  • Practice writing simple Java classes and objects.
  • Explore inheritance and polymorphism through examples.
  • Solve coding challenges involving OOP concepts.
Kotlin Study Group
Join a study group to engage with fellow Kotlin learners, discuss concepts, exchange knowledge, and tackle challenges together, enhancing your understanding and retention.
Show steps
  • Find or create a Kotlin study group online or in person.
  • Attend regular meetings and actively participate in discussions.
  • Collaborate on projects or coding challenges.
Kotlin Coding Challenges
Challenge yourself with coding problems tailored for Kotlin programmers, reinforcing your understanding of Kotlin-specific syntax, idioms, and best practices.
Show steps
  • Identify online platforms or resources for Kotlin coding challenges.
  • Select challenges appropriate to your skill level.
  • Attempt to solve the challenges on your own.
  • Review solutions and discuss approaches with peers or mentors.
Kotlin Project: Build a Simple Application
Apply your Kotlin knowledge by building a functional application, reinforcing your understanding of key Kotlin concepts and gaining hands-on experience in developing software solutions.
Show steps
  • Identify a simple application idea that aligns with your interests.
  • Design the application's architecture and user interface.
  • Implement the application's functionality using Kotlin.
  • Test and debug the application thoroughly.
  • Deploy the application to a platform or share it with others.
Mentor Junior Kotlin Developers
Help solidify your understanding of Kotlin by mentoring junior developers, sharing your knowledge, and guiding them through their learning journey, while also contributing to the Kotlin community.
Show steps
  • Identify platforms or organizations where you can mentor junior Kotlin developers.
  • Prepare materials and resources to support your mentees.
  • Provide guidance and feedback on their Kotlin code and projects.

Career center

Learners who complete Kotlin for Java Developers will develop knowledge and skills that may be useful to these careers:
Software Developer
With this course, you gain a practical knowledge of Kotlin and can become a Software Developer. Kotlin is part of the Android programming language family and is in demand with businesses and corporations requiring mobile applications. A Software Developer can be employed by a software company, a mobile application developer, or can even be a freelance developer. Your background with Java will be complemented by the skills you gain in writing cleaner, more concise Kotlin code.
Mobile Application Developer
Kotlin is a popular language for writing mobile applications for the Android operating system. As a Mobile Application Developer, you will be responsible for programming the logic and functionality behind the mobile application. Your existing Java knowledge will equip you well for transitioning to this role, and the further knowledge of Kotlin gained in this course will put you ahead of the competition.
Computer Programmer
Computer Programmers write and implement code, a skill that you will gain from taking this course. By learning Kotlin your skills will be enhanced, and you will be able to write code for a variety of different uses. You may work on code for web browsers, mobile applications, or desktop software. In any case, you will be able to write cleaner, more concise code thanks to your learning Kotlin.
Front-End Developer
As a Front End Developer you will design and implement user interfaces for web applications. This course will hone your Java skills and enhance them by teaching you Kotlin, a more versatile and concise language. This will help you to create responsive and user-friendly web applications and may lead to a promotion or a pay increase in your current role.
Data Scientist
Kotlin is useful in the field of data science, and many Data Scientists are learning it to improve their coding skills. This course will teach you all the fundamentals of Kotlin as it pertains to data science, making it a beneficial course for you to take before pursuing data science roles. Data Science is a highly paid field, and by investing in this course, you may be able to transition to this field.
Web Developer
Kotlin can be used for back-end web development, or for creating mobile applications. As a Web Developer, this course will help you to close the gap between your Java knowledge and Kotlin for back-end web development. By learning Kotlin you will be able to write cleaner, more expressive and more concise code.
Software Engineer
Kotlin is used by many Software Engineers, and has many applications in the field of software engineering. In this course you will learn the basics of Kotlin and build a foundation of skills that can be applied to any software engineering role. By expanding your knowledge and skillset with Kotlin, you may be promoted, qualify for a higher paying position, or be able to transition into a new role.
Full-Stack Developer
Kotlin can be used for full-stack development, and is particularly useful for writing clean, concise back-end code. As a Full Stack Developer, you will work on both front-end and back-end development. By taking this course, you are learning Kotlin from the ground up, which will help you to become a more well-rounded Full Stack Developer necessary for success in your role.
Back-End Developer
Kotlin can be used for back-end development and many Back End Developers use Kotlin to make their code more concise and readable. As a Back End Developer, this course will teach you the basics of Kotlin and how to apply that to back-end development. This will help you to become a more effective back-end developer by giving you more tools and a wider skill set.
Android Developer
Learning Kotlin is a great way to become an Android Developer, and Kotlin is a popular programming language for Android development. As an Android Developer you will be creating applications that run on the Android operating system. This course will teach you Kotlin and help you to build a foundation necessary for working with Android applications.
Java Developer
This course will help you to improve your skills as a Java Developer. By learning Kotlin, a concise and expressive language, you can enhance your existing Java skills. As a Java Developer, you will be able to use Kotlin to improve your code readability and expressiveness. This may lead to increased pay or promotion opportunities within your current role, as well as open up new possibilities for career growth.
Application Developer
The skills you learn in this course will be useful as an Application Developer. Kotlin is a popular programming language for mobile applications. As an Application Developer, you will be responsible for designing and creating mobile applications. The skills you learn in this course can definitely be applied to this role and may help you to be more efficient and effective at your job.
Data Analyst
This course will give you a solid foundation for possible future work as a Data Analyst. Kotlin is a language for the JVM and Android, and as a Data Analyst you may find that your work includes managing big data. By enhancing your skills with big data, you may be able to qualify for promotions, raises, and leadership roles within your company.
Database Administrator
Kotlin is not typically used in conjunction with database administration; however, you may find this course useful if you wish to expand into programming. As a Database Administrator, you will be responsible for managing and maintaining databases. By taking this course and learning the basics of Kotlin, you can build a strong foundation for programming that may lead to new opportunities in software engineering and development.
Data Engineer
Kotlin is not typically used in data engineering; however, taking this course could be useful if you are seeking a career as a Data Engineer. This course will build a foundation that you can use to learn more advanced programming skills, branching into data engineering with the right educational pursuits. Data Engineering is a lucrative and modern field, and by taking this course you will be taking a step in the right direction.

Reading list

We've selected eight books that we think will supplement your learning. Use these to develop background knowledge, enrich your coursework, and gain a deeper understanding of the topics covered in Kotlin for Java Developers.
Is the official guide to Kotlin. It covers all the key concepts of the language, from the basics to the most advanced features. It's written in a clear and concise style, making it easy to understand even complex concepts.
Starts with the basics of the Kotlin language and deep dives into more advanced topics such as coroutines, concurrency, and functional programming. It's a valuable resource for experienced Java developers looking to expand their skillset to Kotlin.
Head First Kotlin beginner-friendly introduction to Kotlin. It uses a visual and interactive approach to teaching the language. *This is an excellent choice for a supplemental book for this course.* Head First Kotlin can serve as a frame of reference for learning more about Kotlin.
Takes a more hands-on approach than traditional textbooks. It uses a conversational style and interactive exercises to make learning Kotlin fun and easy. It's particularly helpful for beginners or those looking for a practical introduction to Kotlin.
Kotlin for Android Developers practical guide to using Kotlin for Android development. It covers all the basics of Kotlin, as well as more advanced topics such as coroutines and Jetpack Compose. *works well for this course as it can provide a deeper dive into using Kotlin with Android than the course is able to provide.*
Comprehensive guide to Android development with Kotlin. It covers all the key concepts of Android development, from building user interfaces to working with databases, and is written in a clear and concise style.
Functional and Reactive Domain Modeling book about functional programming and reactive programming in Kotlin. It covers the basics of functional programming, as well as more advanced topics such as monads and reactive streams. *supplements this course well, especially for those students interested in learning more about functional programming in Kotlin.*

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