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

# Use `PutGeofence` with an AWS SDK
<a name="location_example_location_PutGeofence_section"></a>

The following code examples show how to use `PutGeofence`.

Action examples are code excerpts from larger programs and must be run in context. You can see this action in context in the following code example: 
+  [Learn the basics](location_example_location_Scenario_section.md) 

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

```
    /**
     * Adds a new geofence to the specified collection.
     *
     * @param collectionName the name of the geofence collection to add the geofence to
     * @param geoId          the unique identifier for the geofence
     */
    public CompletableFuture<PutGeofenceResponse> putGeofence(String collectionName, String geoId) {
        // Define the geofence geometry (polygon).
        GeofenceGeometry geofenceGeometry = GeofenceGeometry.builder()
            .polygon(List.of(
                List.of(
                    List.of(-122.3381, 47.6101), // First point
                    List.of(-122.3281, 47.6101),
                    List.of(-122.3281, 47.6201),
                    List.of(-122.3381, 47.6201),
                    List.of(-122.3381, 47.6101) // Closing the polygon
                )
            ))
            .build();

        PutGeofenceRequest geofenceRequest = PutGeofenceRequest.builder()
            .collectionName(collectionName) // Specify the collection.
            .geofenceId(geoId) // Unique ID for the geofence.
            .geometry(geofenceGeometry)
            .build();

        return getClient().putGeofence(geofenceRequest)
            .whenComplete((response, exception) -> {
                if (exception != null) {
                    Throwable cause = exception.getCause();
                    if (cause instanceof ValidationException) {
                        throw new CompletionException("Validation error while creating geofence: " + cause.getMessage(), cause);
                    }
                    throw new CompletionException("Error creating geofence: " + exception.getMessage(), exception);
                }
            });
    }
```
+  For API details, see [PutGeofence](https://docs.aws.amazon.com/goto/SdkForJavaV2/location-2020-11-19/PutGeofence) in *AWS SDK for Java 2.x API Reference*. 

------
#### [ JavaScript ]

**SDK for JavaScript (v3)**  
 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/javascriptv3/example_code/location/actions#code-examples). 

```
import { fileURLToPath } from "node:url";
import {
  PutGeofenceCommand,
  LocationClient,
  ValidationException,
} from "@aws-sdk/client-location";
import data from "./inputs.json" with { type: "json" };

const region = "eu-west-1";
const locationClient = new LocationClient({ region: region });
export const main = async () => {
  const geoFenceGeoParams = {
    CollectionName: `${data.inputs.collectionName}`,
    GeofenceId: `${data.inputs.geoId}`,
    Geometry: {
      Polygon: [
        [
          [-122.3381, 47.6101],
          [-122.3281, 47.6101],
          [-122.3281, 47.6201],
          [-122.3381, 47.6201],
          [-122.3381, 47.6101],
        ],
      ],
    },
  };
  try {
    const command = new PutGeofenceCommand(geoFenceGeoParams);
    const response = await locationClient.send(command);
    console.log("GeoFence created. GeoFence ID is: ", response.GeofenceId);
  } catch (error) {
    console.error(
      `A validation error occurred while creating geofence: ${error} \n Exiting program.`,
    );
    return;
  }
};
```
+  For API details, see [PutGeofence](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/location/command/PutGeofenceCommand) in *AWS SDK for JavaScript 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/location#code-examples). 

```
/**
 * Adds a new geofence to the specified collection.
 *
 * @param collectionName the name of the geofence collection to add the geofence to
 * @param geoId          the unique identifier for the geofence
 */
suspend fun putGeofence(collectionName: String, geoId: String) {
    val geofenceGeometry = GeofenceGeometry {
        polygon = listOf(
            listOf(
                listOf(-122.3381, 47.6101),
                listOf(-122.3281, 47.6101),
                listOf(-122.3281, 47.6201),
                listOf(-122.3381, 47.6201),
                listOf(-122.3381, 47.6101),
            ),
        )
    }

    val geofenceRequest = PutGeofenceRequest {
        this.collectionName = collectionName
        this.geofenceId = geoId
        this.geometry = geofenceGeometry
    }

    LocationClient.fromEnvironment { region = "us-east-1" }.use { client ->
        client.putGeofence(geofenceRequest)
    }
}
```
+  For API details, see [PutGeofence](https://sdk.amazonaws.com/kotlin/api/latest/index.html) in *AWS SDK for Kotlin API reference*. 

------