Difference between Java and httpclient implementation of HTTP sampler in JMeter while uploading file

Question

When I use Java implementation in HTTP sampler while recording script I'm able to upload file but I was not able to do the same when I use httpclient.

When I referred JMeter manual, it shows that Java implementation uses http from JVM for implementation, but I don't understand the difference here.

Can anyone help me understand this?

Answer 1

HTTPClient sampler , refers to Apache http request implementation, while Java sampler refers to Java http request implementation. See JMeter HTTP request