This blog post introduces the Java REST clients for Elasticsearch. The main focus will be on the High Level REST Client, but the low level REST client will be covered as well.
You can also check out the github repository for the code samples at https://github.com/spinscale/elasticsearch-rest-client-samples and the accompanying blog post at https://spinscale.de/posts/2020-04-15-introduction-into-the-elasticsearch-java-rest-client.html
Speaker: Alexander Reelsen, Community Advocate
You can watch this video also at the source.