Building an Event Listener SPI (Plugin) for KeyCloak,In this blog, I will talk about how to build an event listener plugin (called an SPI) for KeyCloak So, what is Keycloak? Keyclo...

How Do I Compare Strings In Java,This article is originally published at https://coderolls.com/compare-strings-in-java/ In this article you are going to learn how to compare string...

Classes and Objects,Classes and objects can be used to create code that acts similar, or has similar features, but with variations. You could have a class called 'Dog' which stores...

Java Garbage Collection Logs & How to Analyze Them, Understanding Java Garbage Collection (3 Part Series) 1 Java Garbage Collection Logs & How to Analyze Them 2 A Quick Start o...

Top 5 Career Options for Senior and Experienced Developers,Disclosure: This post includes affiliate links; I may receive compensation if you purchase products or services from the ...

Design Patterns — Composite,This has been posted on Medium The composite design pattern is about a hierarchy where nodes with children have different behavior than childless nodes...

Project Overview: the Basic Microservices Architecture with Spring Cloud,This post presents the basic architecture of an online flower shop in a microservices architecture. I have ...

Need help setting up Java 13 with JavaFX,Over on the B4J site they encourage the use of Java 11 and have a zip file containing a full Java 11 with JavaFX zip available. I'd like to...

I need some advice...,As many of you know I run an open source project called Ara, here are some links: FultonBrowne / Ara-android A virtual assistant for almost any android phone....

My first attempt at Generics...,... it turns out I didn't need it! It's been a while that I wanted to try something with Generics. The opportunity just hit me when an implementatio...

Exemplo de uso do MQTT com Java,MQTT (Message Queuing Telemetry Transport) é um protocolo de mensagens leve e simples de se usar, tem sido muito usado para desenvolvimento de solu...

Como fazer uma requisição GET de uma API REST em Java e transformar o JSON em um objeto,Como realizar uma simples leitura de uma API REST que disponibiliza um JSON como resposta ...