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

# Use `CreateFunction` with an AWS SDK
<a name="cloudfront_example_cloudfront_CreateFunction_section"></a>

The following code example shows how to use `CreateFunction`.

------
#### [ 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/cloudfront#code-examples). 

```
import software.amazon.awssdk.core.SdkBytes;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.cloudfront.CloudFrontClient;
import software.amazon.awssdk.services.cloudfront.model.CloudFrontException;
import software.amazon.awssdk.services.cloudfront.model.CreateFunctionRequest;
import software.amazon.awssdk.services.cloudfront.model.CreateFunctionResponse;
import software.amazon.awssdk.services.cloudfront.model.FunctionConfig;
import software.amazon.awssdk.services.cloudfront.model.FunctionRuntime;
import java.io.InputStream;

/**
 * Before running this Java V2 code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation topic:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 */
public class CreateFunction {

    public static void main(String[] args) {
        final String usage = """

                Usage:
                    <functionName> <filePath>

                Where:
                    functionName - The name of the function to create.\s
                    filePath - The path to a file that contains the application logic for the function.\s
                """;

        if (args.length != 2) {
            System.out.println(usage);
            System.exit(1);
        }

        String functionName = args[0];
        String filePath = args[1];
        CloudFrontClient cloudFrontClient = CloudFrontClient.builder()
                .region(Region.AWS_GLOBAL)
                .build();

        String funArn = createNewFunction(cloudFrontClient, functionName, filePath);
        System.out.println("The function ARN is " + funArn);
        cloudFrontClient.close();
    }

    public static String createNewFunction(CloudFrontClient cloudFrontClient, String functionName, String filePath) {
        try {
            InputStream fileIs = CreateFunction.class.getClassLoader().getResourceAsStream(filePath);
            SdkBytes functionCode = SdkBytes.fromInputStream(fileIs);

            FunctionConfig config = FunctionConfig.builder()
                    .comment("Created by using the CloudFront Java API")
                    .runtime(FunctionRuntime.CLOUDFRONT_JS_1_0)
                    .build();

            CreateFunctionRequest functionRequest = CreateFunctionRequest.builder()
                    .name(functionName)
                    .functionCode(functionCode)
                    .functionConfig(config)
                    .build();

            CreateFunctionResponse response = cloudFrontClient.createFunction(functionRequest);
            return response.functionSummary().functionMetadata().functionARN();

        } catch (CloudFrontException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
        return "";
    }
}
```
+  For API details, see [CreateFunction](https://docs.aws.amazon.com/goto/SdkForJavaV2/cloudfront-2020-05-31/CreateFunction) in *AWS SDK for Java 2.x API Reference*. 

------