title: aws s3 bucket copying files between buckets
body: <p>Can some one please explain the parameters in the CopyObjectRequest constructor:</p>
  
  <pre><code>CopyObjectRequest copyObjRequest = new CopyObjectRequest(srcbucket, srcKey, destbucket, destKey);              
  s3Client.copyObject(copyObjRequest);
  </code></pre>
  
  <p>What does sourcekey and destinationkey refer to, and what they should hold?</p>