//snippet-sourcedescription:[DeleteAlarm.java demonstrates how to delete a CloudWatch alarm.]
//snippet-keyword:[SDK for Java 2.0]
//snippet-keyword:[Code Sample]
//snippet-service:[cloudwatch]
//snippet-sourcetype:[full-example]
//snippet-sourcedate:[03/02/2020]
//snippet-sourceauthor:[scmacdon]

/*
 * Copyright 2010-2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 *
 *  http://aws.amazon.com/apache2.0
 *
 * or in the "license" file accompanying this file. This file is distributed
 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing
 * permissions and limitations under the License.
 */
package com.example.cloudwatch;
// snippet-start:[cloudwatch.java2.delete_metrics.complete]
// snippet-start:[cloudwatch.java2.delete_metrics.import]
import software.amazon.awssdk.services.cloudwatch.CloudWatchClient;
import software.amazon.awssdk.services.cloudwatch.model.CloudWatchException;
import software.amazon.awssdk.services.cloudwatch.model.DeleteAlarmsRequest;
import software.amazon.awssdk.services.cloudwatch.model.DeleteAlarmsResponse;
// snippet-end:[cloudwatch.java2.delete_metrics.import]

/**
 * Deletes a CloudWatch alarm
 */
public class DeleteAlarm {
    public static void main(String[] args) {

        final String USAGE =
                "To run this example, supply an alarm name\n" +
                        "Ex: DeleteAlarm <alarm-name>\n";

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

        // snippet-start:[cloudwatch.java2.delete_metrics.main]
        String alarmName = args[0];
        try {
            CloudWatchClient cw = CloudWatchClient.builder().build();

            DeleteAlarmsRequest request = DeleteAlarmsRequest.builder()
                .alarmNames(alarmName).build();

            DeleteAlarmsResponse response = cw.deleteAlarms(request);
            System.out.printf("Successfully deleted alarm %s", alarmName);

        } catch (CloudWatchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
        // snippet-end:[cloudwatch.java2.delete_metrics.main]
    }
}
// snippet-end:[cloudwatch.java2.delete_metrics.complete]

@@ -178,22 +178,29 @@
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@@ -328,18 +328,8 @@
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@@ -933,67 +933,8 @@
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-// snippet-start:%5Bcloudwatch.java2.delete_metrics.complete%5D
 %0D%0A//
@@ -990,16 +990,63 @@
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+import software.amazon.awssdk.regions.Region;%0D%0A
 import s
@@ -1266,87 +1266,8 @@
 t;%0D%0A
-import software.amazon.awssdk.services.cloudwatch.model.DeleteAlarmsResponse;%0D%0A
 // s
@@ -1713,73 +1713,8 @@
 %0D%0A%0D%0A
-        // snippet-start:%5Bcloudwatch.java2.delete_metrics.main%5D%0D%0A
     
@@ -1758,19 +1758,43 @@
     
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+Region region = Region.US_EAST_2;%0D%0A
     
@@ -1845,27 +1845,284 @@
 uilder()
-.build();%0D%0A
+%0D%0A                .region(region)%0D%0A                .build();%0D%0A%0D%0A        deleteCWAlarm(cw, alarmName) ;%0D%0A    %7D%0D%0A%0D%0A    // snippet-start:%5Bcloudwatch.java2.delete_metrics.main%5D%0D%0A    public static void deleteCWAlarm(CloudWatchClient cw, String alarmName) %7B%0D%0A%0D%0A        try %7B
 %0D%0A      
@@ -2254,40 +2254,8 @@
     
- DeleteAlarmsResponse response =
  cw.
@@ -2585,63 +2585,4 @@
 %0A%7D%0D%0A
-// snippet-end:%5Bcloudwatch.java2.delete_metrics.complete%5D%0D%0A

Update DeleteAlarm.java