Using the High-Level Java API for Multipart Upload

The AWS SDK for Java exposes a high-level API that simplifies multipart upload (see Uploading Objects Using Multipart Upload API). You can upload data from a file or a stream. You can optionally set advanced options, such as the part size you want to use for the multipart upload, or the number of threads you want to use when uploading the parts concurrently. You can also set optional object properties, the storage class, or ACL. You use the PutObjectRequest and the TransferManagerConfiguration classes to set these advanced options. The TransferManager class of the Java API provides the high-level API for you to upload data.

When possible, TransferManager attempts to use multiple threads to upload multiple parts of a single upload at once. When dealing with large content sizes and high bandwidth, this can have a significant increase on throughput.

In addition to file upload functionality, the TransferManager class provides a method for you to abort multipart upload in progress. You must provide a Date value, and then the API aborts all the multipart uploads that were initiated before the specified date.