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Atlas Device SDKs

Install Realm - Java SDK

On this page

  • Overview
  • Prerequisites
  • Installation
  • Project Gradle Configuration
  • Application Module Gradle Configuration
  • Enable Atlas Device Sync
  • Supported Platforms


Java SDK in Maintenance Mode

The Java SDK is in best-effort maintenance mode and no longer receives new development or non-critical bug fixes. To develop your app with new features, use the Kotlin SDK. You can use the Java SDK with the Kotlin SDK in the same project.

Learn more about how to Migrate from the Java SDK to the Kotlin SDK.


New apps cannot use RealmAny

New App Services Apps will not be able to synchronize data models with properties of type


This page details how to install Realm using the Java SDK in your project and get started.

You can use multiple SDKs in your project. Because the Java SDK is no longer receiving new development, this is useful if you want to use new features in your app. For example, you can add Atlas Device Sync's Data Ingest feature to your app using the Kotlin SDK while continuing to use Java for everything else.

  • Android Studio version 1.5.1 or higher.

  • Java Development Kit (JDK) 11 or higher.

  • An emulated or hardware Android device for testing.

  • Android API Level 16 or higher (Android 4.1 and above).

Realm only supports the Gradle build system. Follow these steps to add the Realm Java SDK to your project.



Because Realm provides a ProGuard configuration as part of the Realm library, you do not need to add any Realm-specific rules to your ProGuard configuration.

To add local-only Realm to your application, make the following changes to your project-level Gradle build file, typically found at <project>/build.gradle:

Then, make the following changes to your application-level Gradle build file, typically found at <project>/app/build.gradle:

After updating the build.gradle files, resolve the dependencies by clicking File > Sync Project with Gradle Files.

To use Atlas Device Sync in your application, create a realm block in your application module build.gradle. Within this block, set syncEnabled to true.

realm {
syncEnabled = true

Realm's Java SDK enables you to build apps for the following platforms:

  • Android

  • Wear OS

  • Android Automotive OS

  • Android TV

  • Android Things

← Atlas Device SDK for Java