---
title: "Exit the library"
url: "https://docs.adyen.com/point-of-sale/classic-library-deprecation/classic-library-integrations/java-native-interface-integration/key-steps-jni/exit-the-library-jni"
source_url: "https://docs.adyen.com/point-of-sale/classic-library-deprecation/classic-library-integrations/java-native-interface-integration/key-steps-jni/exit-the-library-jni.md"
canonical: "https://docs.adyen.com/point-of-sale/classic-library-deprecation/classic-library-integrations/java-native-interface-integration/key-steps-jni/exit-the-library-jni"
last_modified: "2026-05-24T12:54:31+02:00"
language: "en"
---

# Exit the library

[View source](/point-of-sale/classic-library-deprecation/classic-library-integrations/java-native-interface-integration/key-steps-jni/exit-the-library-jni.md)

Exit the library before you turn the POS off.

The call and the callback are asynchronous to prevent the call from blocking the calling thread.

## Class

| Name          | Description                                                                                                                           |
| ------------- | ------------------------------------------------------------------------------------------------------------------------------------- |
| `MerchantPos` | Extends `AdyenPos`. Class used to implement all payment platform functionality. Implements all functions that do not involve the PED. |

## Method

| Name          | Description        |
| ------------- | ------------------ |
| `exitLibrary` | Exits the library. |

## Callback

| Name                  | Description                                                                                                                                                                                                          |
| --------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `exitLibraryCallback` | Callback to the exit library call. The POS must wait until the system returns a callback, the library has been successfully discarded and all related resources are destroyed before continuing with other functions |