Checking dependency updates with Maven
This article describes how to automate checking dependency updates with Apache Maven using a not-so-widely-known plugin, the “Versions Maven Plugin”.
Building “executable” JAR files with Maven
In this article, I will describe how to use Apache Maven to build “executable” JAR files. This is useful if you develop nontrivial applications, especially those using one or more other external JAR files.
The new factory methods in map collections since JDK 19
Did you know that JDK 19 added some new factory methods to “map” collections based on a hash table? These new methods weren’t much publicized, so I guess many developers don’t know their existence. This short article provides an overview of this little new feature.
String building and formatting in Java
What would you answer if I asked you how many ways there are to build/format strings in Java? Maybe you could answer there are a few. No, it’s wrong! There are really many ways to build and format strings, at least up to Java 21. In this article, I will provide a good overview of…
Getting the “identity string” of objects
This short article provides an overview of the various possibilities to obtain the “identity string” for any Java object. This little feature is sometimes very helpful for debugging/logging purposes.
First demo of String Templates with Java 21
Java 21 was released a few days ago, and today, I had some free time to try out the new String Templates feature described in the JEP-430. In this article, I provide a simple demonstrative example of a custom string template processor so that you can better understand the usefulness of this new feature.
Overview of all Java versions
Do you need a quick overview of all Java versions? Please check out the friendly and helpful Java Versions Cheat Sheet! It is developed and actively maintained by me.
Two cases of wrong inheritance usage
Inheritance and correlated polymorphism are among the most important concepts in OOP languages like Java, Kotlin, C#, and others. In this article, I will explain two typical cases of wrong inheritance usage that anyone should not imitate.
Dumping the Spring Environment in Spring Boot
When developing Spring Boot applications, I often need to check if property values are correctly received from configuration files, environment variables, or other sources. There are various ways to perform this task. This article will present my solution for dumping the Spring Environment using a simple application listener.
A hypothetical mapStream for the Java Stream API
On my blog, I generally write articles on Java programming topics that already exist. This time, however, I want to write about a new hypothetical mapStream method that currently doesn’t exist in the Java Stream API but could be interesting to add.