// the take
A small, dependency-free grab-bag of Java/Android utility classes from greenrobot (the EventBus/ObjectBox people): primitive long collections, multimaps, an object cache, IO helpers, and a Murmur3/FNV hash implementation. Useful if you want a couple of specific fast primitives without pulling in Guava or Commons wholesale.
LongHashMap/LongHashSet avoid boxing Long keys and measurably beat the generic Collections API for that use case. The Murmur3A implementation is a real Checksum, supports incremental/progressive hashing with primitive updates (updateLong, updateInt, etc.), and is genuinely higher quality than Java's built-in hashCode. PipelineOutputStream is a legitimate fix for the well-known slowness/deadlock issues of java.io.PipedOutputStream, built on a circular buffer. Zero dependencies and under 100k, so it's trivial to audit or vendor.
No commits since March 2021 — over five years dormant, so treat it as frozen, not maintained; don't expect fixes for new JDK versions or reported bugs. Scope is narrow and overlapping: it doesn't replace Guava or Commons, it just covers a handful of gaps, so you'll likely still need a fuller utility library alongside it. Nothing here addresses JPMS/module-info for anyone on a modular build. Being effectively abandoned, any future security or correctness issue in the hash or IO code has no one to patch it.
We read the README, the directory tree and a key source file in October 2026. Nobody pays to be listed. How we judge →