Interested to learn about Mock DAO? Check our article explaining how mock the DAO layer completely when writing tests against Spring services

Interested to learn about Lambda? Check our article explaining how we can create closures in Java using lambda expressions.

Interested to learn about General Inheritance? Check our article explaining why General Inheritance is problematic and how to fix it

Kotlin extension and delegations, Spring Boot 2.6, custom JPA repositories, open-source dilemma, and microservices vs monoliths!

Migrating to Java 17, i18n in Spring Boot, naming strategies in Hibernate 5, simple web server, and fully-managed load testing on Azure. Good stuff as we're getting closer to 2022.

A quick and practical guide to mimicking "touch" behavior in Java.

Learn how to make copies of immutable objects with changes to only a single property using Lombok.

A quick and practical guide to using dot as decimal separator in Java.

Learn about Java's "implicit super constructor is undefined" error and how to resolve it

All about log4j RCE exploit, Spring Boot remedies for log4j, building native images in Quarkus, and a new AWS region in Jakarta.

Learn various ways to search enums in Java.

We may produce utility classes with static methods in Java and then receive a warning from Sonar about the implicit public constructor. We look at how to handle this error and some alternative implementations for static modules.

Learn how to access different cell values using Apache POI.

Learn various approaches to avoid null String objects while concatenating Strings in Java.

Learn two approaches on how to make a Java HashMap support different types' value data

Apache POI allows us to build Excel spreadsheets from Java code. In this tutorial we look at the steps for adding images to our spreadsheets.

A quick and practical guide to ByteBuffer -> String conversion in Java.

We may need to test whether the binary digits of a number are set. We explore how to do this for any digit in an integer, using some optimised binary maths as well as some simpler alternatives.

Learn which ports are opened by JMX on startup

Interested to learn about Jakarta MVC? Check our article explaining the insights of Jakarta MVC.