I want to read your code… not travel through it. I want code for a single Java method to fit on one screen. I do not want to scroll vertically or horizontally when I am looking at a single method. Making me scroll is an opportunity for me to lose…

Have you seen the movie Zombieland? There are rules for surviving in Zombieland. Rule number two is called Double Tap. When a zombie is attacking you, don’t get stingy with bullets. Shoot twice! I’ve seen the Double Tap pattern used occasionally with Eclipse Collections over the years. Here’s one example…

I learned something important during the pandemic, so I wrote it down. I watched Hamilton the Musical on Disney+ back in July 2020. The musical was simply amazing. I felt like I had been missing this in my life for a very long time. The title of this blog is…

Reflecting on my Java Champion story and its evolution after five years. A marker along the journey, not the destination It was truly a great honor for me to be selected as a Java Champion in July 2018. By the time I was selected, there were around 265 Java Champions, out of an estimated 9–12 million Java developers.

You don’t. You can’t. You won’t. I wrote this blog to help Java developers understand the benefits of differentiating between mutable and immutable collection interfaces. Java is an amazingly successful programming language and has been around for almost three decades now. The Java Collections framework is one of the most…

How to find the union, intersection, and difference of Sets in Java Stop the Mutations! I first learned how to find the union, intersection, and difference of two sets in Java by using addAll, retainAll, and removeAll. What always confused me was why I needed to mutate a Set to be able to…

Exploring high-protein iteration patterns, without any excess carbs — Three years ago, I worked with Nikhil Nanivadekar on an experimental collections framework in an open source kata repository, in preparation for a presentation we gave to the JCP Executive Committee in April 2020. I decided to write this blog to share the knowledge we learned with the broader Java…

Rejecting single page corporate distillation of the human experience. Summary vs. Index I’ve become indifferent on the importance of Curriculum Vitae. My CV tells you where I claim to have worked, for how long, corporate titles I have amassed, where I went to school, and skills I claim to have some proficiency in…

The mystery of the missing get method on the Java Set interface. How to get from a Set with no get? The Set interface in Java does not have a get method. This has been the case since the Set interface was added in Java 2. The Map interface on the other hand has a get method.