Try below code
bucket_name='xxxxxx';
key='xxxxxxxxxxxxxxxxxxxxxxxxxxxx';
images3 = new File(uri.getPath())
ObjectMetadata metadata = new ObjectMetadata();
metadata.setContentEncoding("UTF-8");
imageSize = inputStream.available();
metadata.setContentLength(imageSize);
TransferManager transferManager = new TransferManager(credentialsProvider);
Upload upload = transferManager.upload(bucket_name, key, images3, metadata);
upload.waitForCompletion();
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