This repository houses the Java SDK for use with Optimizely Feature Experimentation and Optimizely Full Stack (legacy).
Optimizely Feature Experimentation is an A/B testing and feature management tool for product development teams that enables you to experiment at every step. Using Optimizely Feature Experimentation allows for every feature on your roadmap to be an opportunity to discover hidden insights. Learn more at Optimizely.com, or see the developer documentation.
Optimizely Rollouts is free feature flags for development teams. You can easily roll out and roll back features in any application without code deploys, mitigating risk for every feature on your roadmap.
Refer to the Java SDK's developer documentation for detailed instructions on getting started with using the SDK.
Java 8 or higher versions.
The Java SDK is distributed through Maven Central and is created with source and target compatibility of Java 1.8. The core-api and httpclient packages are optimizely-sdk-core-api and optimizely-sdk-httpclient, respectively.
core-api requires org.slf4j:slf4j-api:1.7.16 and a supported JSON parser.
We currently integrate with Jackson, GSON, json.org, and json-simple; if any of those packages are available at runtime, they will be used by core-api. If none of those packages are already provided in your project's classpath, one will need to be added.
core-httpclient-impl is an optional dependency that implements the event dispatcher and requires org.apache.httpcomponents:httpclient:4.5.2.
NOTE
Optimizely previously distributed the Java SDK through Bintray/JCenter. But, as of April 27, 2021, Bintray/JCenter will become a read-only repository indefinitely. The publish repository has been migrated to MavenCentral for the SDK version 3.8.1 or later.
repositories {
mavenCentral()
jcenter()
}
dependencies {
compile 'com.optimizely.ab:core-api:{VERSION}'
compile 'com.optimizely.ab:core-httpclient-impl:{VERSION}'
// The SDK integrates with multiple JSON parsers, here we use Jackson.
compile 'com.fasterxml.jackson.core:jackson-core:2.7.1'
compile 'com.fasterxml.jackson.core:jackson-annotations:2.7.1'
compile 'com.fasterxml.jackson.core:jackson-databind:2.7.1'
}
See the Optimizely Feature Experimentation developer documentation to learn how to set up your first Java project and use the SDK.
You can run all unit tests with:
./gradlew test
We utilize FindBugs to identify possible bugs in the SDK. To run the check:
./gradlew check
JMH benchmarks can be run through gradle:
./gradlew core-api:jmh
Results are generated in $buildDir/reports/jmh.
Please see CONTRIBUTING.
First-party code (under core-api/ and core-httpclient-impl) is copyright Optimizely, Inc. and contributors, licensed under Apache 2.0.
This software incorporates code from the following open source projects:
SLF4J https://www.slf4j.org
Copyright © 2004-2017 QOS.ch
License (MIT): https://www.slf4j.org/license.html
Jackson Annotations https://github.com/FasterXML/jackson-annotations
License (Apache 2.0): https://github.com/FasterXML/jackson-annotations/blob/master/src/main/resources/META-INF/LICENSE
Gson https://github.com/google/gson
Copyright © 2008 Google Inc.
License (Apache 2.0): https://github.com/google/gson/blob/master/LICENSE
JSON-java https://github.com/stleary/JSON-java
Copyright © 2002 JSON.org
License (The JSON License): https://github.com/stleary/JSON-java/blob/master/LICENSE
JSON.simple https://code.google.com/archive/p/json-simple/
Copyright © January 2004
License (Apache 2.0): https://github.com/fangyidong/json-simple/blob/master/LICENSE.txt
Jackson Databind https://github.com/FasterXML/jackson-databind
License (Apache 2.0): https://github.com/FasterXML/jackson-databind/blob/master/src/main/resources/META-INF/LICENSE
Gson https://github.com/google/gson
Copyright © 2008 Google Inc.
License (Apache 2.0): https://github.com/google/gson/blob/master/LICENSE
Apache HttpClient https://hc.apache.org/httpcomponents-client-ga/index.html
Copyright © January 2004
License (Apache 2.0): https://github.com/apache/httpcomponents-client/blob/master/LICENSE.txt