- AWS Code Sample demonstrates how to allocate an elastic IP address for an Amazon EC2 instance.

/* * Copyright, 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 * * * * 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.ec2; import; import; import; import; import; import; import; import; /** * Allocates an elastic IP address for an EC2 instance */ public class AllocateAddress { public static void main(String[] args) { final String USAGE = "To run this example, supply an instance id that you can obtain from the AWS Console\n" + "Ex: AllocateAddress <instance_id>\n"; if (args.length != 1) { System.out.println(USAGE); System.exit(1); } String instanceId = args[0]; Region region = Region.US_EAST_1; Ec2Client ec2 = Ec2Client.builder() .region(region) .build(); System.out.println(getAllocateAddress(ec2, instanceId)); } public static String getAllocateAddress( Ec2Client ec2, String instanceId) { try { AllocateAddressRequest allocateRequest = AllocateAddressRequest.builder() .domain(DomainType.VPC) .build(); AllocateAddressResponse allocateResponse = ec2.allocateAddress(allocateRequest); String allocationId = allocateResponse.allocationId(); AssociateAddressRequest associateRequest = AssociateAddressRequest.builder() .instanceId(instanceId) .allocationId(allocationId) .build(); AssociateAddressResponse associateResponse = ec2.associateAddress(associateRequest); return associateResponse.associationId(); } catch (Ec2Exception e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } return ""; } }

Sample Details

Service: Amazon EC2

Last tested: 2/11/2020

Author: scmacdon

Type: full-example