Release: AWS SDK for Java 1.4.0

Amazon EC2 Default Virtual Private Clouds

Added support for default virtual private clouds (VPC) when launching EC2 instances. For more information see Amazon Elastic Compute Cloud and the Amazon Elastic Compute Cloud User Guide.

Amazon EC2 AMI Copy

You can copy an AMI from one region to another, enabling you to quickly and easily launch consistent instances in more than one AWS region.

For more information, see Copying AMIs in the Amazon Elastic Compute Cloud User Guide.

Set a client's endpoint by its region.

All web service clients now feature a setRegion(Region) method which can be used to set its endpoint to the appropriate URL for a particular AWS region. The following snippet demonstrates how to use the new interface to set a client's region.

dynamo = new AmazonDynamoDBClient(credentials);
dynamo.setRegion(Region.getRegion(Regions.US_WEST_2));

dynamo = Region.getRegion(Regions.US_WEST_2)
               .createClient(AmazonDynamoDBClient.class, credentials, clientConfig);

The set of canonical regional service endpoints are fetched from cloudfront the first time they are needed, then used for the duration of the process's life. This introduces an insignificant but measurable latency the first time a web service client is constructed in this fashion.

JSON Policy Parser

The SDK's object-oriented policy implementation, com.amazonaws.auth.Policy, now supports creating Policy objects from their JSON representation via the fromJSON() method. For more information, see the documentation for the Policy class.

Model classes now implement java.io.Serializable

All request and response classes in the SDK now implement the Serializable interface, required for several common frameworks including GWT.

Changes to S3 host name SSL verification

The Amazon S3 client is now less strict when validating host names, when using DNS-style bucket addressing (the default). Now any domain ending in s3.amazonaws.com will bypass the strict SSL checking requirements. This change fixes issues experienced by customers in non-US regions using buckets with periods in the name.

Improvements to AmazonS3EncryptionClient

Improvements to AmazonS3EncryptionClient enable IO errors on any file based encrypted upload to Amazon S3 to be retried. This will reduce the amount of transient IO errors you see when using the encryption client to upload from files, since the encryption can now be replayed from the file an unlimited number of times.