The road to Kotlin Symbol Processing
There’s a long back story to Java annotations. Introduced in 2004 for Java 5 and supported by the javac compiler since Java 6 in 2002, Read more
Testing Kotlin with Spock Part 3 – Interface default method
Kotlin allows you to put method implementation in an interface. The same mechanism can be found in Java interfaces as default methods (and also Groovy Read more
Testing Kotlin with Spock Part 2 – Enum with instance method
The enum class with instance method in Kotlin is quite similar to its Java version, but they are look a bit different in the bytecode. Let's see the difference by writing some tests using Spock.What do we want to test?Let's see the code that we want to... Read more
Spring Boot 2.0 HTTP request metrics with Micrometer
Introduction
Brand new Spring Boot 2.0 has just been released and TouKs couldn’t wait to try it in the production. One of the newly added Read more
MapStruct mapper injection in OSGi Blueprint
What is MapStruct?According to MapStruct website:MapStruct is a code generator that greatly simplifies the implementation of mappings between Java bean types based on a convention over configuration approach. The generated mapping code uses plain metho... Read more
Vavr, Collections, and Java Stream API Collectors
Vavr is now a must-have for every modern Java 8+ project. It encourages writing code in a functional manner by providing a new persistent Collections Read more
Deploy WSDL file as OSGI Bundle in Apache Karaf
Introduction
WSDL file describes webservices. Java classes are often generated from WSDL. For this purpose, we could use command line tools (e. g. wsdl2Java or Read more
Formatting Java Time with Spring Boot using JSON
The aim of this post is to summarize and review ways of formatting Java Time objects using Spring Boot and Jackson library.
This post is Read more Do not use AllArgsConstructor in your public API
Introduction
Do you think about compatibility of your public API when you modify classes from it? It is especially easy to miss out that something Read more
Primitives and its wrapped types compatibility
IntroductionHow often do you think about possible changes in your API? Do you consider that something required could become optional in future? How about compatibility of such change? One of this changes is going from primitive (e. g. int) to its wrapp... Read more