From the release of the first version in 1995 to the present, the Java language has gone through ups and downs for 26 years, and the latest Java version has also been iterated to Java 16.
Java has a huge ecosystem, its coverage is very wide, and it has been the top development language for more than ten consecutive years, so Java is very stable compared to other languages.
1. JAVA market
Java has a very wide application market. Its ecosystem covers almost all software and hardware currently on the market. Java is almost omnipotent. You can think of it. .
Web development: can do large-scale Internet websites such as Jingdong, Taobao, Renren, Qunar, Meituan, etc. Java has great advantages in developing large-scale websites with high access, high concurrency, and clustering.
Mobile terminal development: At present, all the APP background code on the mobile phone and some mobile terminal page java can be done.
Client development: mainly for the government, institutions and large enterprises, such as medical, school, OA, mailbox, voting, finance, examination, logistics, mining and other information systems. These applications can be seen everywhere in our lives, such as hospital registration system, company punch card system, logistics system, etc.
Judging from the current latest boss recruitment, the demand for java is very large, but there are prerequisites for this demand, so it must be a development engineer who has been developing for more than 3 years. Some people say that java is saturated, and saturation is only for those who are just learning java. In terms of engineers who have no development experience in the near future, does it mean that beginners can't find jobs related to java development, NO! There are internship positions.
This is only for first-tier cities. Compared with second- and third-tier cities, the actual development experience is slightly more relaxed.
2. Java entry learning (system) route and learning materials
Step 1: Basic knowledge of Java
To learn Java, you must first understand what Java is, and what are its future development directions and application scenarios? Of course, many practitioners and scholars often focus on the salary level of the Java industry. It is not wrong to consider this, but for a deep understanding of Java But it has no practical significance. You can look at books on professional analysis of Java, which will be of great help for later learning.
The second step: theoretical knowledge learning
这一过程尤为重要，毕竟这是学习Java的关键，而且，这一过程对于系统化的要求更高，如何循序渐进，有方式有目的的学习，将是小白更加快速的学懂Java的关键。所以给大家分享一个学习Java知识点的先后顺序安排，希望对大家有所帮助。
1、Java 基础以及 Web 开发基础—小程序项目阶段，让学员可掌握Java 基本面向对象知识、Java 常用集合的使用、JDBC 与 MySQL 基础、HTML/CSS/JavaScript 前端基础技术、 Servlet 编写服务端程序等，同时熟练使用 IDEA 开发工具，能实现简单的小程序;
2、Java高级基础、SSM 前端框架、代码管理、持续集成，是进阶阶段，让学员可以深入理解Java面向对象相关知识点，可以胜任Java 初级软件工程师、Web 初级前端开发工程师、初级 BI 工程师等岗位。
3、服务与分布式解决方案，让学员掌握Linux、Docker、Vue、SpringBoot、Shiro、分布式事务的使用等，可以熟练使用Docker 完成项目部署，胜任Java 中级开发工程师等岗位;
4、大型互联网解决方案，让学员掌握JUC、Zookeeper、Dubbo、MySQL 高级、MyCat和微信小程序以及微信支付的开发等内容，可以胜任Java 高级软件工程师等岗位。
第三步、真实实训项目、培养实操能力
如今互联网上关于Java的应用案例有很多，也有很多的实训项目，大家可以去进行独立的实操。
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这套教程很适合准备入行开发的零基础员学习Java。视频中穿插多个实战项目，每一个知识点都讲解的通俗易懂，由浅入深。不仅适用于零基础的初学者，有经验的程序员也可做巩固学习。