Donald Raab

Performance of Lazy and Eager Iteration Patterns on Small Lists in Java Exploring a blind spot in my Eclipse Collections performance benchmarks.

Blog: Performance of Lazy and Eager Iteration Patterns on Small Lists in Java

Exploring a blind spot in my Eclipse Collections performance benchmarks.
donraab.medium.com/performance-...

Book: Eclipse Collections Categorically Eclipse Collections Categorically: Level up your programming game.

The 1st anniversary of "Eclipse Collections Categorically" release is this month. From March 9 -> 12, 2026 and again for 1️⃣ day on March 16th, 2026, there's a free Kindle book offer on Amazon. A book written by a human (Me!) who still loves programming. Enjoy! 🤷‍♂️🏃📖
donraab.medium.com/book-eclipse...

Performance of Lazy and Eager Iteration Patterns on Small Lists in Java Exploring a blind spot in my Eclipse Collections performance benchmarks.

Blog: Performance of Lazy and Eager Iteration Patterns on Small Lists in Java

Exploring a blind spot in my Eclipse Collections performance benchmarks.
donraab.medium.com/performance-...

Empty Should be Empty Why does empty cost so much in Java sometimes?

Empty should be empty!

The shock and surprise when I saw the memory cost of a Stream created from an empty List in #Java was audible.
donraab.medium.com/empty-should...

JUG leaders and Java Champions at DevNexus 😎😎

Current events confirm the achieved wisdom of time-honored classics in the social sciences.

Explaining the Eclipse prefix in Eclipse Collections Eclipse Collections is a standalone open source collections library for Java

For folks who haven't looked at #EclipseCollections because they don't use the Eclipse IDE. Eclipse Collections (EC) and the Eclipse IDE are both independent projects at the Eclipse Foundation. 💡

Note: I created EC and have coded with IntelliJ for 24 years. 🙏
donraab.medium.com/explaining-t...

The hardcover version of the book is currently discounted on Amazon in U.S., Ireland, and Belgium. I don't know how long the discount will be available.

The Kindle version of the book will have a free book run from March 9-11, 2026. Mark your calendars if you want a free digital copy.

Want to level up your API design and #Java coding skills?

The book "Eclipse Collections Categorically: Level up your programming game" can help.

GenAI tools can help you code faster.

ECC shows how to design/code better, for the machine and future readers. Mechanical and Symmetric Sympathy.💡

When everyone is a producer, no one is a consumer.

My Twenty-one Year Journey to Write and Publish My First Book Twenty-one years is just a page turn in the general scheme of things

"It’s strange to be holding a book written about something you created twenty one years earlier. Did I really do that? This journey has taken a very long time. I hope my journey will inform and inspire others to take their own journeys."
donraab.medium.com/my-twenty-on...

Heaven’s Gate A poem about the finality of life.

My first ever poem from 1987 that I published on medium several years ago. A call to getting off our butts and doing all the things and celebrating life every single day. Good journeys to everyone. 🤗
donraab.medium.com/heavens-gate...

Time for a walk in the snow with my daughter, a latte and some poetry. Timeline detox for anyone who needs it. ☕️🤗

The hardcover version of the book is currently discounted on Amazon in U.S., Ireland, and Belgium. I don't know how long the discount will be available.

The Kindle version of the book will have a free book run from March 9-11, 2026. Mark your calendars if you want a free digital copy.

Want to level up your API design and #Java coding skills?

The book "Eclipse Collections Categorically: Level up your programming game" can help.

GenAI tools can help you code faster.

ECC shows how to design/code better, for the machine and future readers. Mechanical and Symmetric Sympathy.💡

The hardcover version of "Eclipse Collections Categorically" is currently being offered at a 39% discount by Amazon. I'm not sure how long this discount will be available, so take advantage of it while you can. Happy Valentine's Day! ❤️

www.amazon.com/Eclipse-Coll...

My first JavaFX application Learning JavaFX by building a simple TodoList application in IntelliJ

Positive vibes building UIs.
medium.com/javarevisite...

The hardcover edition of "Eclipse Collections Categorically" is currently discounted on Amazon in the U.S. and Ireland. I don't know how much longer this discount will be available. The book is also available again on Kindle Unlimited for folks who subscribe.

Congrats to the Garden State #Java User Group for its 25th anniversary! #gsjug @cguntur.bsky.social

The hardcover edition of "Eclipse Collections Categorically" is currently discounted on Amazon in the U.S. and Ireland. I don't know how much longer this discount will be available. The book is also available again on Kindle Unlimited for folks who subscribe.

Sorry, the code said ofAll when the test method name said withAll. Both ofAll/withAll work.

Interestingly, #EclipseCollections does not have an instance withAll method on MutableIntCollection that takes an IntStream, but there are ofAll/withAll methods on the IntLists factories that take an IntStream. 🤷‍♂️

What if the add and remove methods in java.util.Collection had fluent counterparts? Eclipse Collections has complements to add/remove that can be chained.

There are thousands of subtle design decisions we made in #EclipseCollections over the years. I write about them so folks have the benefit of being able to learn from them many years later. The methods with/without, withAll/withoutAll are interesting cases. 🙏
donraab.medium.com/what-if-the-...

I have a new blog to work on. 🤷‍♂️

Java Streams are great but it’s time for better Java Collections After 25 years, it’s time for Java to get a Collections upgrade.

Better collections in #Java are your choice. You can add #EclipseCollections as a dependency today, or tell the Core JDK team you want better collections in #Java, and hope enough developers ask and the work eventually gets prioritized. Your choice, or your voice. 🤷‍♂️
medium.com/javarevisite...

The hardcover version of "Eclipse Collections Categorically" is currently being offered at a 39% discount by Amazon. I'm not sure how long this discount will be available, so take advantage of it while you can. Happy Valentine's Day! ❤️

www.amazon.com/Eclipse-Coll...

When folks program using OOP, they often refer to nouns as objects, and verbs as methods. I rarely, if ever, see mentions of prepositions. 🤔

I got this as a gift for Xmas in 2019. My 20 year old son finally built it for me and gave it to me this past weekend. It is beautiful. Only 970 instructions. 👍

Can someone get GenAI to build it faster?

If you haven't drawn or seen a UML Sequence diagram in a while, I included a few in this blog. 🤷‍♂️

Getting Started with Eclipse Collections — Part 1 Every journey has a beginning. This one has code and diagrams.

In part 1 of this 4 part blog series titled "Getting Started with Eclipse Collections", I cover "Creating Collections".

The creation examples include:

1️⃣ Lists
2️⃣ Sets
3️⃣ Stacks
4️⃣ Bags
5️⃣ SortedSets
6️⃣ SortedBags
7️⃣ Maps
8️⃣ SortedMaps
9️⃣ BiMaps
🔟 Multimaps

...and more!
donraab.medium.com/getting-star...