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com.googlecode.javaewah : JavaEWAH

Maven & Gradle

Mar 08, 2023
93 usages
537 stars

JavaEWAH · 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 always more efficient storage-wise than an uncompressed bitmap (implemented in Java as the BitSet class). Unlike some alternatives, javaewah does not rely on a patented scheme.

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Latest Version

Download com.googlecode.javaewah : JavaEWAH Javadoc & API Documentation - Latest Versions:

All Versions

Download com.googlecode.javaewah : JavaEWAH Javadoc & API Documentation - All Versions:

Version Size Javadoc Updated
1.2.x
1.1.x
1.0.x
0.9.x
0.8.x
0.7.x
0.6.x
0.5.x
0.4.x
0.3.x

How to open Javadoc JAR file in web browser

  1. Rename the file JavaEWAH-1.2.3-javadoc.jar to JavaEWAH-1.2.3-javadoc.zip
  2. Use your favourite unzip tool (WinRAR / WinZIP) to extract it, now you have a folder JavaEWAH-1.2.3-javadoc
  3. Double click index.html will open the index page on your default web browser.

How to generate Javadoc from a source JAR?

Running the command javadoc:

javadoc --ignore-source-errors -encoding UTF-8 -sourcepath "JavaEWAH-1.2.3-sources.jar" -d "JavaEWAH-1.2.3-javadoc" -subpackages 

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