README.md

Akka Interaction Patterns for Java (Exercises)

This repository is to do assigned exercises from the Akka Interaction Pattern for Java course OFFERED BY AKKADEMY

Prerequisites

• Java (JDK) 23 or newer
• Apache Maven 3.9.9 (to be safe, the version should be 3.9.0 <= version < 4.0.0)
• IntelliJ IDEA or your preferred IDE
• Scala 3.6.x or newer [for Scala exercise]
• SBT 1.10.x or newer [for Scala exercise] (to be safe, the version should be 1.10.11 <= version < 2.0.0)

[Optional] You can use SDKMAN! to install JDK23, Maven, Scala, and SBT:

Installation Example:

sdk install java 23.0.2-librca # or your preferred version
sdk install maven 3.9.9

sdk install scala 3.6.4
sdk install sbt 1.10.11

Dependencies Upgraded from the actual exercises

Akka Profile dependencies

• com.typesafe.akka:akka-bom_2.13 - v2.9.4 to com.typesafe.akka:akka-bom_3 - v2.10.0
  • akka-actor-typed_2.13 to akka-actor-typed_3
  • akka-actor-testkit-typed_2.13 to akka-actor-testkit-typed_3

Libraries

• ch.qos.logback:logback-classic from 1.2.11 to 1.5.18
• junit from 4.13.2 to 4.13.2 (not upgrade yet, and as Akka documentation doesn't mention of using JUnit Jupiter (JUnit 5))

Plugins

• org.apache.maven.plugins:maven-compiler-plugin from 3.5.1 to 3.14.0
• org.codehaus.mojo:exec-maven-plugin from 1.6.0 to 3.5.0
• org.apache.maven.plugins:maven-surefire-plugin from 2.2.2 to 3.5.3

Further Learning

Java Exercises

Using OO-Style

1. Request Response Pattern - Java
2. Adapted Response Pattern - Java
   • Use record classes with sealed interfaces instead of final classes
3. Timers - Java
   • Use record classes with sealed interfaces instead of final classes
   • Use pattern matching instead of onMessage in Behavior

Scala Exercises

Using Functional-Style (with immutable state)

1. Request Response Pattern - Scala
2. Adapted Response Pattern - Scala
3. Timers - Scala