I recommend studying Sql and databases

[sumaiyakhatun29]

At least what HTTP is, server-client and the like. It will take you a day or two, but you will have the basics. This is a distraction. A small digression: 90% of vacancies require Spring, but I still recommend starting with the very basics, then you will understand what is under the hood, and you will be able to swim better. Which is what I did.


To begin with, there is a great book from Head First, there is a bolivia whatsapp fan video, there is a chic sql-ex. What do you need to understand? As for me, what is a database, how is data stored there, how to get it, how to create it - i.e. simple queries in the Sql language up to the Join level. create a couple of databases and twirl them (What to choose here? Well, MySql and its Workbanch are somehow prettier and simpler, but Postgre has still come across me in 80% of interviews and it is better to get used to it right away).


After, we delve into JDBC. This is a thing, a library that allows you to connect our Java and the DB, and also has a set of interfaces (ready-made) for working with the DB. Your task here will be to create a database, write code to connect and work with it a simple console application that adds, takes data. After that I would supplement it with Hibernate (this is optional, but in my opinion there is no better moment than to understand the principle of ORM right here and now).