Where should zero-based java start?

Before learning Java, you should download JDK and configure environment variables. JDK is the core of the whole Java development, including Java's running environment and Java tools, and then you can officially start learning Java.

In fact, most free online video tutorials are collections. Starting from the basics, you will know what to learn first and then what to learn with video tutorials. Go and search for Gao Qi's Java300 episodes, which is still very detailed.

Here I also share the learning route of Java to help you better understand the knowledge system of Java.

First, the basic stage of JavaSE

Object-oriented programming (basic)

Object-oriented programming (advanced)

Abnormal mechanism

Java public class

Data structure and algorithm

Collection (container)

IO stream

Multithread operation

Network programming

Group promotion training

Multi-thread lifting training

Second, the database stage.

MySQL foundation

MySQL query statement

Database object

JDBC

Reflection and interpretation

Database modeling and UML modeling

Design pattern

Third, the WEB front end.

Java Script language

jQuery

bootstrap program

A video editing software

Four. JavaEE stage (core stage)

HTTP/Tomcat

MVC architecture

Small application program

JSP

EL+JSTL+ filter+listener

Ajax and JSON

Pagination and file upload/download

Verb (abbreviation of verb) JavaEE stage (high-level framework)

Spring 5.2.2

Spring MVC 5.2.2

RBAC

EasyUI 1.7.0

Payment/SMS verification

Frame reinforcement of intransitive verbs

Linux - CentOS 8

expert

recall

quartz

Spring Boot 2.2.2

Shiro

fashionable

Git/GitEE

Mibatis

Seven, distributed architecture

Zoo keeper

Remote position control

Bo Du

Radice

Thor

Rabbit q

FastDFS

Nginx

Spring safety

Spring meeting

Maybatis generator

My cat

Eight, micro service stage

Elastic search

MongoDB

Chun Yun Wang Fei Eureka

Chunyun net flying ribbon

Spring clouds open and pretend

Chunyunwang Feihai Strix

Spring cloud configuration

Chunyun gateway

roustabout

K8S

LCN

For the video, I recommend you to search for Mr. Gao Qi's (Java 300 episodes) in Mile Mile.

I hope it will help everyone!