Overview If you take a look into JDK-22, you will find a very interesting thing, which is called 461: Stream Gatherers (Preview). Those Gatherers are a way to enhance the Stream API, which is existing in the JDK since 2014 (JDK 8). The collectors have been enhanced over the time (You can look up the differences via …

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I had the basic idea to install SonarQube on a server fully automatically. This is of course nothing new. I've set that challenge for me to level up my Ansible skills a bit and also get more details into the setup for a later step while going into a Kubernetes cluster setup. In relation to that I've setting up a server …

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I'm very often on the command line of a linux machine (only plain console via ssh no UI) and have to analyze different information from text files. Typically, log files which contain line oriented things like login failures or alike. For example having a auth.log on a Debian system which look like this (a 10 line …

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I worked on an Apache Maven Plugin (more accurately on the maven-dependency-plugin) while I realized that it has a dependency commons-collections4 (version 4.2) which is used only once in the whole code base. That means that only a single import statement of those packages (import org.apache.commons.collections4.*) in …

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Overview If you are using Apache Maven I suppose you have configured several plugins within your pom file already. As an example we use the Maven Enforcer Plugin to prevent starting a given build with a Maven version which is less than 3.5.0 which looks like this: 1<project> 2 <build> 3 <plugins> 4 …

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I'm very active on Stackoverflow and answering question on different topics but majority I do is about Apache Maven. So how I'm going to answer a question? First of course I read the question (obviously). Most of the time I realize there is not enough information in the question to really understand the problem. Often …

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In the previous part of the series - Maven Plugin Testing - In a Modern way - Part V we have seen how to define system properties to run Maven. In this part we will take a deeper look how we can define profile(s) for a Maven call to be used. Let us take a look at a simple example taken from the previous part. …

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You might have already used the strategy pattern in relationship with Spring Boot where it is very convenient to use. You simply define an interface for example (I use the prefixing I only in these examples for clarity): 1public interface IOneStrategy { 2 void executeTheThing(); 3} Define some implementations like …

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In the previous part of the series - Maven Plugin Testing - In a Modern way - Part IV we have seen how to define goals to run Maven. In this part we will take a deeper look how we can define system properties for a Maven call to be used. Let us take a look at a simple example taken from the previous part. …

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In the prevous part of the series - Maven Plugin Testing - In a Modern way - Part III we have seen how to define command line options. In this part we will take a deeper look which goals will run for each test case and how we can change that. Let us start with simple example test case like the following: …

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