Groovy 3 @NullCheck annotation - less code and less NPE
Groovy 3 helps you write less, but more secure code. Today I want to show you one of the features added in the latest release - @NullCheck annotation.
Groovy 3 String GDK improvements - takeRight, takeBetween, and a few others
Groovy 3 was released a few days ago[1], and it introduced a lot of important new features to the language. Today I want to show you a few useful improvements in the GDK. We will take a closer look into methods like takeRight, takeAfter, takeBetween, and a few others that were added to the java.lang.String class.
Jenkins Scripted Pipeline vs. Declarative Pipeline - the 4 practical differences
If you read this blog post, there is a high chance you’re looking for information about practical differences between scripted and declarative pipeline, correct? You couldn’t find a better place then. I’m going to show you the four most practical differences between those two. Stay with me for a few minutes and enjoy the ride!
The blog development report - year 2019
2019 was a fantastic year for my blog. I didn’t manage to write articles every month, but it didn’t stop the growth. Today I would like to share with you some numbers. And the reason is simple - you’ve made those numbers possible, so I think you deserve to get some "behind the scenes" facts.
Three Groovy String methods that will make your life Groovier!
Groovy String API offers many useful methods to make working with strings much more pleasant. Today I would like to show you three, not so very popular, yet convenient methods. Let’s jump straight into it!
Using Jenkins Pipeline parallel stages to build Maven project with different JDKs
In one of the latest blog posts, I have shown you how you can build a Docker image with Java and Maven installed with the SDKMAN! command-line tool. Today I would like to continue the topic and show you, how you can compile your project using two different Java versions in parallel.
Quicksort in Groovy - can it be as fast as implemented in Java?
I started reading "Cracking the Coding Interview, 6th Edition" book recently and it inspired me to experiment a bit. It’s been a while since I implemented the quicksort algorithm the last time, and I did that in Haskell. I remember some old and imperative implementations in Java, but I never tried to implement it in Groovy. Let’s give it a try!
Using CircleCI to deploy Hexo blog to GitHub Pages - how to set it up?
I was using Travis CI to execute 271 builds and deployments of this blog. Last Friday, I decided to experiment with CircleCI and see if this could be a viable alternative to my current solution. In this blog post, I will explain why I decided to switch, and how to set up CircleCI to deploy Hexo blog to the GitHub Pages without much hustle.
Building Java and Maven docker images using parallelized Jenkins Pipeline and SDKMAN!
In the last article, I have shown you how you can build a docker image for Jenkins Pipeline using SDKMAN! command-line tool. Today I will show you how you can build multiple different docker images using parallelized Jenkins Pipeline.
Using SDKMAN! as a docker image for Jenkins Pipeline - a step by step guide
A few days ago, I was struggling with some Docker images I use in my Jenkins CI environment. I run some Jenkins Pipelines, and I like to define build environment as code using custom Docker images. Everything was fine until I had to consider running different Java or Maven versions. I decided to use one of my favorite command-line tools - SDKMAN!, to build a highly configurable build environment.