Primitive-Collections
A Primitive Collection library that reduces memory usage and improves performance and provides a lot of QoL (by Speiger)
fastutil
fastutil extends the Java™ Collections Framework by providing type-specific maps, sets, lists and queues. (by vigna)
| Primitive-Collections | fastutil | |
|---|---|---|
| 1 | 5 | |
| 48 | 2,193 | |
| - | 1.9% | |
| 7.1 | 7.7 | |
| 29 days ago | 6 months ago | |
| Java | Java | |
| Apache License 2.0 | Apache License 2.0 |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Primitive-Collections
Posts with mentions or reviews of Primitive-Collections.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2021-12-14.
fastutil
Posts with mentions or reviews of fastutil.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2025-11-02.
- Go Primitive in Java, or Go in a Box
-
Do you know how to evaluate performance of your Java applications?
For a request with thousands of IDs (e.g., batch validation), each Integer requires unboxing. The alternative? Use int[] and IntHashSet (from the FastUtil library).
- Você sabe avaliar performance de suas aplicações Java?
- Rawdrawandroid – Build Android apps without any Java, in C and Make
- Gli algoritmi di Unimi nella nuova versione di Java
What are some alternatives?
When comparing Primitive-Collections and fastutil you can also consider the following projects:
Eclipse Collections - Eclipse Collections is a collections framework for Java with optimized data structures and a rich, functional and fluent API.
Trove
HPPC - High Performance Primitive Collections for Java
Agrona - High Performance data structures and utility methods for Java