Reactive and Asynchronous Java Training in Norway

  • Learn via: Classroom / Virtual Classroom / Online
  • Duration: 2 Days
  • Price: Please contact for booking options
We can host this training at your preferred location. Contact us!

Reactive and Asynchronous applications are growing in popularity, but what is the best way to build them? This course teaches you how to apply the latest concurrency techniques to develop state of the art Java applications. With the rise of Microservices and Service Oriented Architectures, asynchronous concurrency is now critical to day-to-day Java development.

We start off by reviewing the differences between asynchronous and synchronous programming. You then build upon this theory by refactoring a project using different modern concurrency techniques including promises using Java 8’s CompletableFuture, actors using Akka and reactive streams using RxJava. You’ll learn the good, the bad and the ugly between these approaches in terms of compositionality, testability and simplicity.


About the Trainers

Raoul-Gabriel Urma

Raoul-Gabriel Urma obtained a PhD in Computer Science from the University of Cambridge. He is co-author of the international bestselling book Java 8 in Action which sold over 20,000 copies in the world. Raoul is a regular conference speakers and delivered over 50 technical talks at international conferences. He has worked for large companies such as Google, eBay, Oracle, and Goldman Sachs, as well as for several startup projects.


Richard Warburton

Richard Warburton is an empirical technologist and solver of deep-dive technical problems. Recently he has written a book on Java 8 Lambdas for O’Reilly. He’s worked as a developer in many areas including Statistical Analytics, Static Analysis, Compilers and Networking. He is a leader in the London Java Community and runs OpenJDK Hackdays. Richard is also a known conference speaker, having talked at JavaOne, Devoxx, JFokus, DevoxxUK, Geecon, JAX London and Codemotion. He has obtained a PhD in Computer Science from the University of Warwick.


Code examples and exercises will be written in Java 8 so a basic knowledge of Java 8 is required

  • Understand various models of concurrency and asynchronous programming
  • Explore and develop applications using the Actor model and Akka
  • Learn how develop and test Promises and CompletableFutures
  • Develop reactive applications using RxJava

Asynchronous vs Synchronous Programming

  • Servlets
  • Asynchronous Servlets (3.0) and Spring
  • Why use asynchronous communications?
  • Solving the C10K Problem and the Microservices Performance problem
  • The full stack - from application right down to the OS
  • Timeouts
  • The Reactive Manifesto
  • Models of Concurrency: Event Based, Promises, The Actor Model, Reactive Streams

Promises using CompletableFutures

  • Executor and Future
  • CompletableFuture
  • Composition patterns
  • Asynchronous Timeouts
  • Exception handling
  • Testing

The Actor Model with Akka

  • Why and when would you use Actors?
  • What are Actors?
  • Using Akka
  • Testing actors

Reactive Streams with RxJava

  • Introducing Reactive Streams
  • Using RxJava
  • Pull vs. Push models
  • Threading and Back Pressure
  • Connecting Reactive streams to databases and web sockets
  • Java 9 Flow API
  • Alternative Reactive Stream Implementations


Contact us for more detail about our trainings and for all other enquiries!

Upcoming Trainings

Join our public courses in our Norway facilities. Private class trainings will be organized at the location of your preference, according to your schedule.

Classroom / Virtual Classroom
03 juni 2024
Oslo, Bergen, Trondheim
2 Days
Classroom / Virtual Classroom
18 juli 2024
Oslo, Bergen, Trondheim
2 Days
Classroom / Virtual Classroom
02 august 2024
Oslo, Bergen, Trondheim
2 Days
Classroom / Virtual Classroom
01 august 2024
Oslo, Bergen, Trondheim
2 Days
Classroom / Virtual Classroom
03 august 2024
Oslo, Bergen, Trondheim
2 Days
Classroom / Virtual Classroom
14 august 2024
Oslo, Bergen, Trondheim
2 Days
Classroom / Virtual Classroom
17 september 2024
Oslo, Bergen, Trondheim
2 Days
Classroom / Virtual Classroom
23 september 2024
Oslo, Bergen, Trondheim
2 Days
Reactive and Asynchronous Java Training Course in Norway

The Nordic country Norway, is in Northern Europe. Known for its stunning natural beauty, including fjords, mountains, and forests, Norway is also famous for its high standard of living and strong social welfare system. Norway's capital and largest city is Oslo. Tromsø, Bergen, Trondheim and Stavanger are the other tourist attracting cities of Norway.

Norway is a constitutional monarchy with King Harald V as the head of state. The country has a population of 5,425,270 as of January 2022. Norway is a relatively small country and has a relatively low population density, with much of its land area covered by forests, mountains, and fjords. Despite its small size, Norway is known for its rich cultural heritage, strong economy, and stunning natural beauty, which attracts millions of visitors every year. This Nordic country is also known for its winter sports, such as skiing and snowboarding, and is a popular destination for outdoor enthusiasts.

Norway has a long history of invention and is home to numerous more top-tier tech firms and research facilities, such as; Kongsberg Gruppen, Telenor, Atea, Evry and Gjensidige Forsikring.

Due to the country's high latitude, there are large seasonal variations in daylight. From late May to late July, the sun never completely descends beneath the horizon. Which attracts many tourists around the world to see the "Land of the Midnight Sun". Tourists mainly visit Sognefjord, Norway's Largest Fjord, Pulpit Rock, one of the most photographed sites in Norway and of course the capital; Oslo.

Oslo is considered the business center of Norway. It is the country's largest city and the capital of Norway. The city is home to many of Norway's largest and most important companies, as well as several international organizations and research institutions. Additionally, the city is a popular tourist destination, known for its scenic location on the Oslo Fjord, its many museums and cultural attractions, and its vibrant nightlife and dining scene. Some of the most popular museums in Oslo are The Norwegian Museum of Cultural History, The Nobel Peace Center, The National Museum of Art, Architecture, and Design, The Munch Museum and The Vigeland Museum.
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