I had gone though 3 rounds of Interview on 19th Oct in Mariot Hotel Gurgaon, they said at last that we will call you ,but No response till now ,should I keep my hope alive ?

I recently attended an interview at the Carelon, for the Java Developer position. The interview covered topics such as Java, Spring Boot, and PostgreSQL. I answered the controller and coding questions using Notepad. During the discussion, there was a disagreement regarding the usage of the map.entrySet() method in Java. Although it is a valid method, my explanation was not considered further. Interviewer was not supportive for us.