HPPC:

Maven dependency

HPPC Maven dependency

<dependency>
    <groupId>com.carrotsearch</groupId>
    <artifactId>hppc</artifactId>
    <version>0.6.1</version>
</dependency>

Stable releases are pushed to Maven Central (up from version 0.3.2). Snapshot and release versions are available from SonaType's public Maven repositories:

<repositories>
    <repository>
        <id>sonatype-nexus-public</id>
        <name>SonaType public snapshots and releases repository</name>
        <url>https://oss.sonatype.org/content/groups/public</url>
        <releases> 
            <!-- set to true if you wish to fetch releases from this repo too. -->
            <enabled>false</enabled>
        </releases> 
        <snapshots>
            <enabled>true</enabled>
        </snapshots>
    </repository>
</repositories>