The bit array data structure is implemented in Java as the BitSet class. Unfortunately, this fails to scale without compression.
JavaEWAH is a word-aligned compressed variant of the Java bitset class. It uses a 64-bit run-length encoding (RLE) compression scheme.
The goal of word-aligned compression is not to achieve the best compression, but rather to improve query processing time. Hence, we try to save CPU cycles, maybe at the expense of storage. However, the EWAH scheme we implemented is ...
Artifacts using JavaEWAH (105)
Repository access and algorithms
Last Release on Sep 9, 2026
Hive Query Language
Last Release on Aug 25, 2026
OWL ontology editing infrastructure used by the Protege desktop application.
Last Release on May 23, 2025
WildFly: Core Galleon Pack
Last Release on Aug 29, 2026
6.Algebird Core104 usages
com.twitter » algebird-core Apache
algebird-core
Last Release on Jul 10, 2023
7.JGit Core26 usages
org.openl.jgit » org.eclipse.jgit BSD +1
Repository access and algorithms
Last Release on Sep 24, 2026
Git Team Provider (Core)
Last Release on Jul 24, 2026
Git integration for pitest
Last Release on Aug 29, 2026
Git Team Provider (UI)
Last Release on Jul 24, 2026