Amazon Web Services (AWS) S3 Java create a sub directory (object)

Question

I am familiar with AWS Java SDK, I also tried to browse the corresponding Javadoc, but I could not realize how do I create a sub directory, i.e., a directory object within a buc

Answer 1

Leaving this answer here just in case someone stumbles upon this. I have been using aws sdk version - 1.11.875 and the following successfully created a folder for me when trying to upload a file into S3 bucket. I did not have to explicitly create the folder as mentioned in the earlier answer.

private void uploadFileToS3Bucket(final String bucketName, final File file) {
    final String fileName = "parent/child/" + file.getName();
    final PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, fileName, file);
    amazonS3.putObject(putObjectRequest);
}

This will create the parent and parent/child folders in the specified S3 bucket and upload the file into child folder.