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// Retrieves the credentials from an AWSCredentials.properties file.

AWSCredentials credentials = null;

try {

5 credentials = new PropertiesCredentials(

GettingStartedApp.class.getResourceAsStream("AwsCredentials.proper

ties"));

} catch (IOException e1) {

System.out.println("Credentials were not properly entered into AwsCre

dentials.properties.");

System.out.println(e1.getMessage());

10 System.exit(-1);

}

// Create the AmazonEC2Client object so we can call various APIs.

AmazonEC2 ec2 = new AmazonEC2Client(credentials);

// Initializes a Spot Instance Request

RequestSpotInstancesRequest requestRequest = new RequestSpotInstances

Request();

// Request 1 x t1.micro instance with a bid price of $0.03.

20 requestRequest.setSpotPrice("0.03");

requestRequest.setInstanceCount(Integer.valueOf(1));

// Set the valid start time to be two minutes from now.

Calendar cal = Calendar.getInstance();

25 cal.add(Calendar.MINUTE, 2);

requestRequest.setValidFrom(cal.getTime());

// Set the valid end time to be two minutes and two hours from now.

cal.add(Calendar.HOUR, 2);

30 requestRequest.setValidUntil(cal.getTime());

// Set up the specifications of the launch. This includes

// the instance type (e.g. t1.micro)

35 // and the latest Amazon Linux AMI id available.

// Note, you should always use the latest Amazon

// Linux AMI id or another of your choosing.

LaunchSpecification launchSpecification = new LaunchSpecification();

launchSpecification.setImageId("ami-8c1fece5");

40 launchSpecification.setInstanceType("t1.micro");

// Add the security group to the request.

ArrayList<String> securityGroups = new ArrayList<String>();

securityGroups.add("GettingStartedGroup");

45 launchSpecification.setSecurityGroups(securityGroups);

// Add the launch specification.

requestRequest.setLaunchSpecification(launchSpecification);

50 // Call the RequestSpotInstance API.

RequestSpotInstancesResult requestResult = ec2.requestSpotInstances(re

questRequest);

Version v1.0.0

AWS SDK for Java Developer Guide

Tutorial: Advanced Amazon EC2 Spot Request

Management