---
title: Java-SDK - 2.0.0-beta
slug: feature-experimentation/release-notes/java-sdk-2-0-0-beta
docTags: 
createdAt: 2026-07-20T15:45:20.181Z
---

\## 2.0.0 Beta
September 29, 2017

This release is a beta release supporting feature flags and rollouts.

\### New Features
\#### Feature Flag Accessors
You can now use feature flags in the Java SDK. You can experiment on features and rollout features through the Optimizely UI.

\- \`isFeatureEnabled\`
\- \`getFeatureVariableBoolean\`
\- \`getFeatureVariableDouble\`
\- \`getFeatureVariableInteger\`
\- \`getFeatureVariableString\`

\### Breaking Changes

\- Remove Live Variables accessors
\- \`getVariableString\`
\- \`getVariableBoolean\`
\- \`getVariableInteger\`
\- \`getVariableDouble\`
\- Remove track with revenue as a parameter. Pass the revenue value as an event tag instead
\- \`track(String, String, long)\`
\- \`track(String, String, Map, long)\`
\- We will no longer run all unit tests in travis-ci against Java 7.
We will still continue to set \`sourceCompatibility\` and \`targetCompatibility\` to 1.6 so that we build for Java 6.

[https://github.com/optimizely/java-sdk/releases/tag/2.0.0-beta](https://github.com/optimizely/java-sdk/releases/tag/2.0.0-beta)