# AT4J

> Java’s linguistic ally

Empower Your Applications with Language Translations.

## Table of Contents

### Guide

- [Introduction {#introduction}](/at4j/guide/introduction.md)
- [Download/Installation {#install}](/at4j/guide/installation.md)
- [Basic Usage {#basic-usage}](/at4j/guide/basic-usage.md)

### Essential Knowledge

- [What is the `CompletableFuture` API? {#completable-future}](/at4j/essential/completable-futures.md)
- [What are `Optional` types? {#optional}](/at4j/essential/optionals.md)
- [Error Handling](/at4j/essential/error-handling.md)
- [Logging](/at4j/essential/logging.md)


### Advanced Usage

- [Creating an AzureApi with a Custom ExecutorService](/at4j/advanced/threading.md)
- [Caching](/at4j/advanced/caching.md)

### Azure Reference

- [Getting an Azure Subscription {#azure-subscription}](/at4j/guide/azure-subscription.md)
- [Azure Available Languages](/at4j/azure-reference/languages.md)
- [Datacenter List](/at4j/azure-reference/datacenter-list.md)
- [Azure Error Code Reference {#azure-errors}](/at4j/error-reference.md)

### Other

- [Examples](/at4j/examples.md)