HashMap Part-2

This is the continues part of HashMap Part-1. If you have not gone through this part we suggest you please go through this part which explains the basic structure of HashMap. In this part, we will cover how HashMap’s put(…

Spring Security OAuth Resource Server

In this article, we will look into how security is implemented for production application in most of the companies using spring oauth2. This is for providing API to API authentication mostly used in microservices architecture. Prerequisite Spring Boot Spring security…

HashMap Part-1

HashMap Structure
The most important interview question of java is Collection and In Collection the most important topic is HashMap. Which is asked in every interview. If you fail to give the answer to the explanation of HashMap, then definitely you will…