// downloaded to a File, byte array or InputStream.
S3Object downloadedObject = s3Service.getObject(testBucket, "helloWorld.txt");
String textData = ServiceUtils.readInputStreamToString(
downloadedObject.getDataInputStream(), "UTF-8");
boolean valid = downloadedObject.verifyData(textData.getBytes("UTF-8"));
System.out.println("Object verified? " + valid);
/*
* List your buckets and objects
*/