The Apache Commons Collections package contains types that extend and augment the Java Collections Framework.
More information can be found on the Apache Commons Collections homepage. The JavaDoc can be browsed. Questions related to the usage of Apache Commons Collections should be posted to the user mailing list.
You can download source and binaries from our download page.
Alternatively you can pull it from the central Maven repositories:
<dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-collections4</artifactId> <version>4.1</version> </dependency>
We accept Pull Requests via GitHub. The developer mailing list is the main channel of communication for contributors. There are some guidelines which will make applying PRs easier for us:
mvn clean test.
This code is under the Apache Licence v2.
NOTICE.txt file for required notices and attributions.
You like Apache Commons Collections? Then donate back to the ASF to support the development.