# Send Bird Chat SDK mix of Java and Kotlin files

**URL:** <https://community.sendbird.com/t/send-bird-chat-sdk-mix-of-java-and-kotlin-files/9011>\
**Category:** Android\
**Tags:** video-call, sendbird-call, push-notification, chatsdk\
**Created:** [February 5, 2024, 9:12am UTC](https://community.sendbird.com/t/send-bird-chat-sdk-mix-of-java-and-kotlin-files/9011 "2024-02-05T09:12:47Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![diwesh.saxena](https://avatars.discourse-cdn.com/v4/letter/d/ccd318/32.png) [@diwesh.saxena](https://community.sendbird.com/u/diwesh.saxena)\
**Post date:** [February 5, 2024, 9:12am UTC](https://community.sendbird.com/t/send-bird-chat-sdk-mix-of-java-and-kotlin-files/9011/1 "2024-02-05T09:12:47Z")

</div>

After examining the Send Bird Chat SDK, I noticed a mix of Java and Kotlin files. Our App is entirely in Java, making integration complex.

Additionally, each feature (Calls @Mentions, Polls etc.) has its own SDK, with some in Java and others in Kotlin.

Specifically, the 1-to-1 direct calls SDK is in Java, while the Group calls SDK is in Kotlin. Given that our App is written entirely in Java, integrating these SDKs poses a challenge.

Is there any SDK are fully in Java. Kindly support this.