Tag: Java

Exception handling in the AWS SDK for Java just got a little easier! We just introduced base exception classes for all AWS services in the SDK. Now all modeled exceptions extend from this service-specific base exception and all unmodeled exceptions (unknown exceptions thrown by the service) will be unmarshalled into the service-specific base exception, and […]

We are pleased to announce a better, more intuitive way to construct and configure service clients in the AWS SDK for Java. Previously, the only way to construct a service client was through one of the many overloaded constructors in the client class. Finding the right constructor was difficult and sometimes required duplicating the default […]

The Amazon SQS Extended Client is an open-source Java library that lets you manage Amazon SQS message payloads with Amazon S3. This is especially useful for storing and retrieving messages with a message payload size larger than the SQS limit of 256 KB. Some customers have asked us about encryption. This blog post explains how […]

TransferManager now supports a feature that parallelizes large downloads from Amazon S3. You do not need to change your code to use this feature. You only need to upgrade the AWS SDK for Java to version 1.11.0 or later. When you download a file using TransferManager, the utility automatically determines if the object is multipart. If so, […]

In this blog post, I will introduce two new features in the AWS Toolkit for Eclipse: creating an AWS Lambda stream function and creating multiple AWS Lambda functions in a single project. Unlike the normal AWS Lambda functions which take in POJOs for handler Input/Output, the AWS Lambda stream functions let you use the InputStream and OutputStream […]

We are happy to announce that the AWS SDK for Java Developer Guide and AWS Toolkit for Eclipse User Guide are now open-sourced on GitHub! You can edit content and code inline, make pull requests, file issues, and send content suggestions to the documentation and SDK teams. The AWS SDKs have always embraced openness as a […]

In this blog post, I will introduce how to test AWS Lambda functions in Eclipse by using the AWS Toolkit for Eclipse. The AWS Toolkit for Eclipse Lambda Plugin provides a feature in which a JUnit test class is created automatically upon creation of a new AWS Lambda Java project. I will give you step-by-step instructions for creating […]

We’ve published several posts on client-side encryption using Java tools over the past couple of years, including ones on the S3 Encryption Client and the DynamoDB Encryption Client. Both of these clients assume a specific AWS service as the storage layer for data encrypted by the client. Today, the AWS Cryptography team released the AWS […]

Client side retries are used to avoid surfacing unnecessary exceptions back to the caller in the case of transient network or service issues.  In these situations a subsequent retry will likely succeed.  Although this process incurs a time penalty, it is often better than the noise from oversensitive client side exceptions.  Retries are less useful […]

In this blog post, I will introduce a simple workflow using the AWS SDK for Java to perform a database migration with the AWS Database Migration Service (AWS DMS). AWS DMS helps you migrate databases to AWS easily and securely. With AWS DMS, the source database remains fully operational during the migration, minimizing downtime to applications that rely on […]