Java snippet to download content from AWS S3 using transfer manger

General information for the business: download large files from S3
Kind of development: New program from scratch
Num. of modules: 1
Description of every module: I need some java code to download a large files from AWS S3.

preconfigured values used by the code are the AWS Access Key and Secret. and output location for file

The runtime input to the code will be the Bucket name and the file name, to be downloaded.

Rec1, use the Requester pays header (as its a 3rd party owned bucket)
Rec2, configure transfer manager
Rec3, code will implement Persistable download
Rec4, Multithread download will be used for performance
Rec,5 the code will validate the file is successfully downloaded and not corrupt


Bucket is already setup on AWS for you to test against. details will be supplied.
Description of requirements/functionality: code should be fully commented. and state should be logged to a txt file

no 3pp now AWS library should be used without prior agreement

details of transfer manager can be found below

http://docs.aws.amazon.com/AWSJavaSDK/latest/javadoc/com/amazonaws/services/s3/transfer/TransferManager.html#resumeDownload(com.amazonaws.services.s3.transfer.PersistableDownload)
OS requirements: Linux
Extra notes: Please reply with a brief explanation of how you would handle the requester pays header to give me some confidence you have good AWS experience.