There are more AWS SDK examples available in the [AWS Doc SDK Examples](https://github.com/awsdocs/aws-doc-sdk-examples) GitHub repo.

# Hello Amazon ECR
<a name="ecr_example_ecr_Hello_section"></a>

The following code examples show how to get started using Amazon ECR.

------
#### [ Java ]

**SDK for Java 2.x**  
 There's more on GitHub. Find the complete example and learn how to set up and run in the [AWS Code Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/ecr#code-examples). 

```
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.ecr.EcrClient;
import software.amazon.awssdk.services.ecr.model.EcrException;
import software.amazon.awssdk.services.ecr.model.ListImagesRequest;
import software.amazon.awssdk.services.ecr.paginators.ListImagesIterable;

public class HelloECR {

    public static void main(String[] args) {
        final String usage = """
            Usage:    <repositoryName> 

            Where:
               repositoryName - The name of the Amazon ECR repository. 
            """;

        if (args.length != 1) {
            System.out.println(usage);
            System.exit(1);
        }

        String repoName = args[0];
        EcrClient ecrClient = EcrClient.builder()
            .region(Region.US_EAST_1)
            .build();

        listImageTags(ecrClient, repoName);
    }
    public static void listImageTags(EcrClient ecrClient, String repoName){
        ListImagesRequest listImagesPaginator = ListImagesRequest.builder()
            .repositoryName(repoName)
            .build();

        ListImagesIterable imagesIterable = ecrClient.listImagesPaginator(listImagesPaginator);
        imagesIterable.stream()
            .flatMap(r -> r.imageIds().stream())
            .forEach(image -> System.out.println("The docker image tag is: " +image.imageTag()));
    }
}
```
+  For API details, see [listImages](https://docs.aws.amazon.com/goto/SdkForJavaV2/ecr-2015-09-21/listImages) in *AWS SDK for Java 2.x API Reference*. 

------
#### [ Kotlin ]

**SDK for Kotlin**  
 There's more on GitHub. Find the complete example and learn how to set up and run in the [AWS Code Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/ecr#code-examples). 

```
import aws.sdk.kotlin.services.ecr.EcrClient
import aws.sdk.kotlin.services.ecr.model.ListImagesRequest
import kotlin.system.exitProcess

suspend fun main(args: Array<String>) {
    val usage = """
            Usage: <repositoryName> 

            Where:
               repositoryName - The name of the Amazon ECR repository. 
            
    """.trimIndent()

    if (args.size != 1) {
        println(usage)
        exitProcess(1)
    }

    val repoName = args[0]
    listImageTags(repoName)
}

suspend fun listImageTags(repoName: String?) {
    val listImages =
        ListImagesRequest {
            repositoryName = repoName
        }

    EcrClient.fromEnvironment { region = "us-east-1" }.use { ecrClient ->
        val imageResponse = ecrClient.listImages(listImages)
        imageResponse.imageIds?.forEach { imageId ->
            println("Image tag: ${imageId.imageTag}")
        }
    }
}
```
+  For API details, see [listImages](https://sdk.amazonaws.com/kotlin/api/latest/index.html) in *AWS SDK for Kotlin API reference*. 

------
#### [ Python ]

**SDK for Python (Boto3)**  
 There's more on GitHub. Find the complete example and learn how to set up and run in the [AWS Code Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/ecr#code-examples). 

```
import boto3
import argparse
from boto3 import client


def hello_ecr(ecr_client: client, repository_name: str) -> None:
    """
    Use the AWS SDK for Python (Boto3) to create an Amazon Elastic Container Registry (Amazon ECR)
    client and list the images in a repository.
    This example uses the default settings specified in your shared credentials
    and config files.

    :param ecr_client: A Boto3 Amazon ECR Client object. This object wraps
                             the low-level Amazon ECR service API.
    :param repository_name: The name of an Amazon ECR repository in your account.
    """
    print(
        f"Hello, Amazon ECR! Let's list some images in the repository '{repository_name}':\n"
    )
    paginator = ecr_client.get_paginator("list_images")
    page_iterator = paginator.paginate(
        repositoryName=repository_name, PaginationConfig={"MaxItems": 10}
    )

    image_names: [str] = []
    for page in page_iterator:
        for schedule in page["imageIds"]:
            image_names.append(schedule["imageTag"])

    print(f"{len(image_names)} image(s) retrieved.")
    for schedule_name in image_names:
        print(f"\t{schedule_name}")


if __name__ == "__main__":
    parser = argparse.ArgumentParser(description="Run hello Amazon ECR.")
    parser.add_argument(
        "--repository-name",
        type=str,
        help="the name of an Amazon ECR repository in your account.",
        required=True,
    )
    args = parser.parse_args()

    hello_ecr(boto3.client("ecr"), args.repository_name)
```
+  For API details, see [listImages](https://docs.aws.amazon.com/goto/boto3/ecr-2015-09-21/listImages) in *AWS SDK for Python (Boto3) API Reference*. 

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