The above answer does not really help. I figured it out on my own and here is the code snippet in case anybody else has this question.

AmazonS3 awsBuckets =
        AmazonS3ClientBuilder.standard()
            .withCredentials(credentialsProvider)
            .withEndpointConfiguration(new EndpointConfiguration(bucketUrl, "nyc3"))
            .build();

PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, fileName, converted);

putObjectRequest.setCannedAcl(CannedAccessControlList.PublicRead);
awsBuckets.putObject(putObjectRequest);

Hello,

I have not done this with Java, but usually with Laravel for example, what I would do is to sue the putFile method, which allows you to pass the this as an argument:

Storage::disk('spaces')->putFile('uploads', request()->file, 'public');

In your case what I could suggest is setting the x-amz-acl header to public-read that way each individual file would be available for everyone. For more information you could take a look at the documentation here:

https://developers.digitalocean.com/documentation/spaces/#object

Or another option would be to set your listing permissions to public so that all files in that listing would be available by default:

https://www.digitalocean.com/docs/spaces/how-to/set-file-listing-permissions/

Hope that this helps!
Regards,
Bobby