added Readme

Author: scmacdon

javav2/example_code/location/README.md

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+# Amazon Location 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 Location Service.
+
+<!--custom.overview.start-->
+<!--custom.overview.end-->
+
+_Amazon Location lets you easily and securely add maps, places, routes, geofences, and trackers, to your applications._
+
+## ⚠ Important
+
+* Running this code might result in charges to your AWS account. For more details, see [AWS Pricing](https://aws.amazon.com/pricing/) and [Free Tier](https://aws.amazon.com/free/).
+* 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).
+
+<!--custom.important.start-->
+<!--custom.important.end-->
+
+## Code examples
+
+### Prerequisites
+
+For prerequisites, see the [README](../../README.md#Prerequisites) in the `javav2` folder.
+
+
+<!--custom.prerequisites.start-->
+<!--custom.prerequisites.end-->
+
+### Get started
+
+- [Hello Amazon Location](src/main/java/com/example/location/HelloLocation.java#L18) (`ListGeofencesPaginator`)
+
+
+### Basics
+
+Code examples that show you how to perform the essential operations within a service.
+
+- [Learn the basics](src/main/java/com/example/location/scenario/LocationScenario.java)
+
+
+### Single actions
+
+Code excerpts that show you how to call individual service functions.
+
+- [BatchUpdateDevicePosition](src/main/java/com/example/location/scenario/LocationActions.java#L355)
+- [CalculateRoute](src/main/java/com/example/location/scenario/LocationActions.java#L254)
+- [CreateGeofenceCollection](src/main/java/com/example/location/scenario/LocationActions.java#L480)
+- [CreateKey](src/main/java/com/example/location/scenario/LocationActions.java#L512)
+- [CreateMap](src/main/java/com/example/location/scenario/LocationActions.java#L552)
+- [CreateRouteCalculator](src/main/java/com/example/location/scenario/LocationActions.java#L292)
+- [CreateTracker](src/main/java/com/example/location/scenario/LocationActions.java#L399)
+- [DeleteGeofenceCollection](src/main/java/com/example/location/scenario/LocationActions.java#L589)
+- [DeleteMap](src/main/java/com/example/location/scenario/LocationActions.java#L654)
+- [DeleteRouteCalculator](src/main/java/com/example/location/scenario/LocationActions.java#L720)
+- [DeleteTracker](src/main/java/com/example/location/scenario/LocationActions.java#L685)
+- [GetDevicePosition](src/main/java/com/example/location/scenario/LocationActions.java#L323)
+- [PutGeofence](src/main/java/com/example/location/scenario/LocationActions.java#L434)
+
+
+<!--custom.examples.start-->
+<!--custom.examples.end-->
+
+## Run the examples
+
+### Instructions
+
+
+<!--custom.instructions.start-->
+<!--custom.instructions.end-->
+
+#### Hello Amazon Location
+
+This example shows you how to get started using Amazon Location.
+
+
+#### Learn the basics
+
+This example shows you how to do the following:
+
+- Create an Amazon Location map.
+- Create an Amazon Location API key.
+- Display Map URL.
+- Create a geofence collection.
+- Store a geofence geometry.
+- Create a tracker resource.
+- Update the position of a device.
+- Retrieve the most recent position update for a specified device.
+- Create a route calculator.
+- Determine the distance between Seattle and Vancouver.
+- Use Amazon Location higher level APIs.
+- Delete the Amazon Location Assets.
+
+<!--custom.basic_prereqs.location_Scenario.start-->
+<!--custom.basic_prereqs.location_Scenario.end-->
+
+
+<!--custom.basics.location_Scenario.start-->
+<!--custom.basics.location_Scenario.end-->
+
+
+### 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.
+
+
+
+<!--custom.tests.start-->
+<!--custom.tests.end-->
+
+## Additional resources
+
+- [Amazon Location Developer Guide](https://docs.aws.amazon.com/location/latest/developerguide/what-is.html)
+- [Amazon Location API Reference](https://docs.aws.amazon.com/location/latest/APIReference/Welcome.html)
+- [SDK for Java 2.x Amazon Location reference](https://sdk.amazonaws.com/java/api/latest/software/amazon/awssdk/services/entityresolution/package-summary.html)
+
+<!--custom.resources.start-->
+<!--custom.resources.end-->
+
+---
+
+Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+
+SPDX-License-Identifier: Apache-2.0