Java 21 is available today, and it’s quite the update. It brings us 15 (!) JEPS, finalizing features like Record Patterns & Virtual Threads and previewing new ones like String Templates. This blog post has all the info!
This is how I configured my IntelliJ IDEA to be able to try out Java’s preview features.
This will be a good day, because it’s Java 20 release day! It’s been six months since Java 19 was released, and so it’s time for another fresh wave of Java features. This post will take you on a tour through all JEPs that come with this release and give you a brief introduction of each one of them. Where applicable the differences with Java 19 are highlighted and a few typical use cases are provided, so that you’ll be more than ready to use these features after you’ve finished reading!
Climate change is a thing that affects us all. As developers, we are in a unique position to help do something about this. After all, the whole world runs on computers these days, and computers consume energy. We, developers, program these computers, and the decisions that we make have consequences beyond the business domain we code for. Also, as employed people living in Europe or North-America, we belong to the top 10% of richest people on the planet.
For this final part of the blog series we’ll dive into method references.
In the summer of 2021, I got my Java 11 certification. I expected it to be quite a breeze, because I’d been a Java developer for 14 years and surely I should have seen it all by now, right? Turned out I was very wrong. I came across lots of things that I didn’t even know were possible with Java. In this weekly blog series I will go through 11 of these ‘crazy learnings’ that surprised me the most, even as an experienced developer. We’re diving into functional interfaces today.
In the summer of 2021, I got my Java 11 certification. I expected it to be quite a breeze, because I’d been a Java developer for 14 years and surely I should have seen it all by now, right? Turned out I was very wrong. I came across lots of things that I didn’t even know were possible with Java. In this weekly blog series I will go through 11 of these ‘crazy learnings’ that surprised me the most, even as an experienced developer. Today is about equality when you’re dealing with wrapper objects.
In the summer of 2021, I got my Java 11 certification. I expected it to be quite a breeze, because I’d been a Java developer for 14 years and surely I should have seen it all by now, right? Turned out I was very wrong. I came across lots of things that I didn’t even know were possible with Java. In this weekly blog series I will go through 11 of these ‘crazy learnings’ that surprised me the most, even as an experienced developer. We’ll dive into array equality today.
In the summer of 2021, I got my Java 11 certification. I expected it to be quite a breeze, because I’d been a Java developer for 14 years and surely I should have seen it all by now, right? Turned out I was very wrong. I came across lots of things that I didn’t even know were possible with Java. In this weekly blog series I will go through 11 of these ‘crazy learnings’ that surprised me the most, even as an experienced developer. Today we’ll look at the crazy stuff that is allowed in switch statements.
In the summer of 2021, I got my Java 11 certification. I expected it to be quite a breeze, because I’d been a Java developer for 14 years and surely I should have seen it all by now, right? Turned out I was very wrong. I came across lots of things that I didn’t even know were possible with Java. In this weekly blog series I will go through 11 of these ‘crazy learnings’ that surprised me the most, even as an experienced developer. This week’s blog is about about method overloading priorities.
In the summer of 2021, I got my Java 11 certification. I expected it to be quite a breeze, because I’d been a Java developer for 14 years and surely I should have seen it all by now, right? Turned out I was very wrong. I came across lots of things that I didn’t even know were possible with Java. In this weekly blog series I will go through 11 of these ‘crazy learnings’ that surprised me the most, even as an experienced developer. This week we’ll get mathematical as we focus on dividing by zero in Java.
In the summer of 2021, I got my Java 11 certification. I expected it to be quite a breeze, because I’d been a Java developer for 14 years and surely I should have seen it all by now, right? Turned out I was very wrong. I came across lots of things that I didn’t even know were possible with Java. In this weekly blog series I will go through 11 of these ‘crazy learnings’ that surprised me the most, even as an experienced developer. This week we’ll focus on anonymous subclasses in enums.
In the summer of 2021, I got my Java 11 certification. I expected it to be quite a breeze, because I’d been a Java developer for 14 years and surely I should have seen it all by now, right? Turned out I was very wrong. I came across lots of things that I didn’t even know were possible with Java. In this weekly blog series I will go through 11 of these ‘crazy learnings’ that surprised me the most, even as an experienced developer. This week is about accessing static interface methods.
In the summer of 2021, I got my Java 11 certification. I expected it to be quite a breeze, because I’d been a Java developer for 14 years and surely I should have seen it all by now, right? Turned out I was very wrong. I came across lots of things that I didn’t even know were possible with Java. In this weekly blog series I will go through 11 of these ‘crazy learnings’ that surprised me the most, even as an experienced developer. This week we dive into stream elements.
In the summer of 2021, I got my Java 11 certification. I expected it to be quite a breeze, because I’d been a Java developer for 14 years and surely I should have seen it all by now, right? Turned out I was very wrong. I came across lots of things that I didn’t even know were possible with Java. In this weekly blog series I will go through 11 of these ‘crazy learnings’ that surprised me the most, even as an experienced developer. We start off with a few freaky array declarations.
Here’s your chance to share your knowledge about Java, the JVM and all its offshoots, side alleys, traps, pitfalls, amazing capabilities and history. Know a cool fact about Kotlin? Got the low down on what colour James Gosling’s car was when he invented Java? Can you explain how to use caching in Spring?
My daughter is 6 years old, and she and her classmates are currently learning about various professions. Her teacher asked the kids’ parents whether they would want to come into the classroom and explain their profession in 15 minutes or so. I really liked the idea of inspiring these bright young minds with some fun stories about software development, so I applied and prepared a lesson. Which turned out to be a lot harder than I thought it would be.
We’ve known lambdas and streams since Java 8, and they’ve made Java a more powerful language. In the next few versions of Java, even more features that originated in functional languages will be added, one of which is pattern matching. It provides an elegant way to apply conditions to certain aspects of an object. We set out to investigate the possibilities that were introduced in JEP 305 (‘Pattern Matching for instanceof’) and how the pattern matching roadmap will make Java an even more powerful language.
Today is Java’s 25th birthday! On the 23rd of May 1995 the language was introduced at the SunWorld conference, in a time where desktop applications reigned supreme and the internet was still in its infancy.
I was interviewed by Peter Kofler on ethics in software development. He asked me some questions and I answered them as follows. A bit of it is about politics, another bit is about religion, but it is mainly about being a responsible software developer. So this time I mixed my personal and professional opinions. Still, I hope it makes for an interesting read!
Software developers are not particularly keen on maintaining build scripts. Sure, they will do their part in making things work and they’ll even have a go at optimizing the most necessary parts. But they prefer to spend their time writing production code using a ‘real language’, because they feel it better supports their desire for maintainability, flexibility and elegance. That old project that’s been gathering dust for ages and relies on thousands lines of Ant code is a case in point.