Learn how to implement a Basic Calculator in Java, using two different constructs.

Learn about use cases for the modulo operator in Java.

Learn how to use command line tools to find the heap size of a running Java application.

I have previously blogged about the optimziations we are doing in the Apache Camel core. The first 3 blogs (part1, part2, part3) were a while back leading

The work with Jakarta MVC 2.0 goes forward. According to the Jakarta EE Specification Process (JESP), we are now in the development phase where we will

In this blog post we are going to look at the new styling and other new options available in OpenAPI and SwaggerUI Quarkus (v1.10.0 +). Styling Default

A quick and practical overview of threading models in Java.

Learn about work stealing in Java.

The Full Guide to Java Streams.

Quickly learn about the EnumSet and how to start using it in practical scenarios.

Let's take a closer look at the ClassCastException.

Learn about invokedynamic and see how it can help library and language designers to implement many forms of dynamicity.

Learn how to achieve Pair functionality in Java.

Learn how to deal with the @Builder annotation when inheritance is involved.

A quick and practical guide to finding an object's class in Java.

The capacity of an ArrayList functions differently to the size of an Array. We explore the differences and when it's a good idea to set an ArrayList's size.

Learn how and when to use the Java System.exit() function.

Learn about the Breadth-First Search Algorithm in Java

Meet Spring Boot 2.4, Embracing subatomic Java, Catching up with the new Java features, and a set of practical guides on distributed systems.