aws/aws-sdk-java-v2

        byte[] bFile = new byte[(int) outputFile.length()];
        FileInputStream fileInputStream=null;

        fileInputStream = new FileInputStream(outputFile);
        fileInputStream.read(bFile);
        fileInputStream.close();
        InputStream myInputStream = new ByteArrayInputStream(bFile); 

        String contentType=null;
        if(outputFile.getName().endsWith(".js")){
            contentType="application/x-javascript";
        }
        else if(outputFile.getName().endsWith(".css")) {

            contentType="text/css";
        }
        else if(outputFile.getName().endsWith(".html")){
            contentType="text/html";
        }


        byte[] bytes = IOUtils.toByteArray(myInputStream);


        PutObjectRequest req =PutObjectRequest.builder()
                .bucket(bucketName).key(key)
                .cacheControl("max-age=680400").contentType(contentType)
                .contentEncoding("Accept-Encoding").build();
        long contentLength=bytes.length;
        s3Client.putObject(req,RequestBody.fromInputStream(myInputStream, contentLength));