---
title: Java-SDK - 1.8.1
slug: feature-experimentation/release-notes/java-sdk-1-8-1
docTags: 
createdAt: 2026-07-20T15:45:15.142Z
---

\## 1.8.1
December 12, 2017

This is a patch release for 1.8.0. It contains two bug fixes mentioned below.

\### Bug Fixes
SDK returns NullPointerException when activating with unknown attribute.

Pooled connection times out if it is idle for a long time (AsyncEventHandler's HttpClient uses PoolingHttpClientConnectionManager setting a validate interval).

[https://github.com/optimizely/java-sdk/releases/tag/1.8.1](https://github.com/optimizely/java-sdk/releases/tag/1.8.1)