Perguntas de entrevista de vagas de Mulesoft and Java Developer da empresa Apisero

all java related questions from oops , collection, MultiThreading, String....they take my 3 rounds and hr told me that I am selected and offer letter will release in 1 week but after 2 days they call me and said that one more technical round u have to do and then take my last round the interview was so good ...I answered all the questions it's awsm.....but hr told me u r not selected....I advise don't go here it's a waste of time....they didn't hire....as like this 2 of my friends also gone this process and d result is same not selected .Hr first told they released the offer letter in 1 week then take last round and told that ur not selected....rediculos