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# Amazon Comprehend code examples for the SDK for Java 2.x

## Overview

Shows how to use the AWS SDK for Java 2.x to work with Amazon Comprehend.

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*Amazon Comprehend uses natural language processing (NLP) to extract insights about the content of documents without the need of any special preprocessing.*

## ⚠ Important

* Running this code might result in charges to your AWS account.
* Running the tests might result in charges to your AWS account.
* We recommend that you grant your code least privilege. At most, grant only the minimum permissions required to perform the task. For more information, see [Grant least privilege](https://docs.aws.amazon.com/IAM/latest/UserGuide/best-practices.html#grant-least-privilege).
* This code is not tested in every AWS Region. For more information, see [AWS Regional Services](https://aws.amazon.com/about-aws/global-infrastructure/regional-product-services).

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## Code examples

### Prerequisites

For prerequisites, see the [README](../../README.md#Prerequisites) in the `javav2` folder.


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### Single actions

Code excerpts that show you how to call individual service functions.

* [Create a document classifier](src/main/java/com/example/comprehend/DocumentClassifierDemo.java#L62) (`CreateDocumentClassifier`)
* [Detect entities in a document](src/main/java/com/example/comprehend/DetectEntities.java#L45) (`DetectEntities`)
* [Detect key phrases in a document](src/main/java/com/example/comprehend/DetectKeyPhrases.java#L45) (`DetectKeyPhrases`)
* [Detect syntactical elements of a document](src/main/java/com/example/comprehend/DetectSyntax.java#L45) (`DetectSyntax`)
* [Detect the dominant language in a document](src/main/java/com/example/comprehend/DetectLanguage.java#L48) (`DetectDominantLanguage`)
* [Detect the sentiment of a document](src/main/java/com/example/comprehend/DetectSentiment.java#L43) (`DetectSentiment`)

## Run the examples

### Instructions


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### Tests

⚠ Running tests might result in charges to your AWS account.


To find instructions for running these tests, see the [README](../../README.md#tests)
in the `javav2` folder.


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## Additional resources

* [Amazon Comprehend Developer Guide](https://docs.aws.amazon.com/comprehend/latest/dg/what-is.html)
* [Amazon Comprehend API Reference](https://docs.aws.amazon.com/comprehend/latest/APIReference/welcome.html)
* [SDK for Java 2.x Amazon Comprehend reference](https://sdk.amazonaws.com/java/api/latest/software/amazon/awssdk/services/comprehend/package-summary.html)

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SPDX-License-Identifier: Apache-2.0