Kotlin for Java Developers (KTL4J)

Programming, Kotlin

This course guides Java developers to adopt Kotlin with hands-on examples and migration tips. It covers Kotlin fundamentals, full JVM compatibility, practical Java interoperability and techniques to increase team productivity, plus how to compile and integrate Kotlin into existing builds.

During training you'll compare Kotlin and Java idioms, learn null-safety and concise syntax, including data classes, properties and lambdas. You'll explore smart casts, 'when' expressions, collections and string handling, and use tooling on a practical Java project example.

THIS TRAINING COURSE WILL HELP YOU:

  • Write Kotlin code interoperable with existing Java projects
  • Use Kotlin's null-safety and concise syntax effectively
  • Use language features: data classes, lambdas, and 'when' expressions
  • Migrate and run Kotlin code within Java build environments

WHO SHOULD ATTEND?

  • Java developers wanting to adopt Kotlin
  • Developers maintaining JVM-based projects
  • Teams planning code migration or interoperability

COURSE LOCATION AND AVAILABLE DATES



Private training

This course is not scheduled as a public course.
It is delivered exclusively as customised training. The content, duration, date, and delivery format are tailored to the customer's requirements and can also be provided in English.

Request customised training

Course content:

Hide details
  • What is Kotlin
    1. History and design philosophy
    2. Interoperability with Java
    3. Compiling and running code
    4. Development environment
  • Basic syntax
    1. OOP (object-oriented programming)
    2. Data classes
    3. val and var keywords
  • Null-safety principles
  • What Kotlin does better than Java
    1. String handling and formatting
    2. Smart casting
    3. Equality and identity (===)
    4. Lambda expressions
    5. Loops
    6. Collections
  • New features compared to Java
    1. when expressions
    2. Properties
    3. Default and named arguments
    4. Extension functions
    5. Ranges
    6. Operator overloading
  • Integration with Java projects
    1. Practical example
Prerequisites:
Basic knowledge of Java programming is required.
Schedule:
2 days (9:00-17:00)
Price per person:
384.00 € ( 464.64 € incl. 21% VAT)

Training and learning environment

IT classroom with desks, computer monitors, and a projection screen at the front.
What does the environment for in-person IT courses look like?We hold training courses in our own classrooms equipped with modern computer equipment for each participant and a large projection screen. Each workstation is fitted with a powerful computer for seamless practical exercises, and the environment supports a calm, friendly atmosphere during training.
IT classroom with desks, computer monitors, and a projection screen at the front.
Do I need to bring my own laptop to the classroom IT course?Our training rooms are fully equipped, so you do not need to bring your own laptop. A modern computer with all necessary hardware and software is ready for you at your workstation.
Sample ICT Pro certificate of successful completion of an IT training course.
Will you receive an official certificate after completing an IT course?Yes, upon successful completion of the training course, you will receive an official ICT Pro certificate confirming your participation and acquired technical skills. You can use it to verify your qualifications or add it to your professional profile.
Exterior view of the COMGUARD office building on Sochorova Street in Brno.
Where can you find our training center in Brno?The premises of the ICT Pro training center are located on the 1st floor of the COMGUARD building at Sochorova 38 in Brno. Positioned on the border of Žabovřesky and Komín, the location is easily accessible by both car and public transport.
Exterior view of the Opatov Park office building in Prague, Chodov.
Where can you find our training center in Prague?The premises of the ICT Pro training center are located on the 1st floor of the Opatov Park building at Líbalova 1, Prague 11 – Chodov. The location provides a comfortable environment for your education with convenient access.
Fully equipped kitchenette with a coffee machine, microwave, sink, and shelves with cups and glasses.
What facilities and refreshments are available to you during training breaks?Our training centers feature a fully equipped kitchenette for a comfortable break during your courses. The facilities include a coffee machine, microwave, kettle, and a wide selection of drinks and snacks.
Coffee station featuring an automatic coffee machine, yellow and white cups, glasses, and syrups.
What beverage refreshments are available during your course?A beverage station with a coffee machine, teas, syrups, and water is at your disposal throughout the entire training session. You can enjoy a coffee or another drink of your choice anytime during breaks.
Table with sweet pastries, fruit syrups, a water dispenser, and glasses set up for training participants.
What light refreshments are provided for you during the courses?During course breaks, participants can enjoy light sweet snacks, pastries, and fruit syrups to mix their own drinks. Fresh water dispenser and plates are also available for your convenience.
Wicker baskets filled with packaged savory snacks, sweet biscuits, and snack bars.
Should I bring my own snacks to ICT Pro training?There is no need to. A wide selection of savory snacks, sweet biscuits, and snack bars is available for you during breaks. Boost your energy for all-day focus right inside the training center premises.
Outdoor wooden terrace with green surroundings by the glass building of the training center.
Can you spend training breaks in the fresh air?Yes, an outdoor terrace is available at our training center. During breaks between learning sessions, you can relax in the fresh air in a pleasant green environment.
Spacious outdoor wooden terrace with seating and views of the surrounding area.
Where can you relax during course breaks?Our training center features a spacious outdoor terrace with seating options. During breaks between learning sessions, you can step outside to relax and recharge in the fresh air.