The Java learning process is divided into 3 stages and explained separately:

1. First, you must learn the basics of Java language, data types, basic syntax, common data structures, common classes, etc. , there are many online resources.

2. Combine your work content or interests and learn common frameworks, such as SpringBoot, which is commonly used in web development. When learning frameworks, you should choose the current Top 3. Those that are outdated or too new to see the future clearly are not acceptable. Not suitable for novices to learn.

3. As your learning progresses, you will gradually be able to take charge of your own business, accumulate project experience and improve your technical level at work. Nowadays, technology development is iterating very quickly, and you need lifelong learning.

Java knowledge points mainly include the following.

1. Java classification summary

Developing different categories of applications will use different knowledge points. Taking Web services as an example, the summary is as follows

With the help of The convenience given to us by the development of IT technology allows us to focus our limited energy on business development and accumulate experience through actual project experience.

1) The development and operation environment is the basic work of installation and configuration. With the help of Docker automated one-click deployment, these dependent environments can be started in seconds.

2) The workload of component integration is relatively large, and we often encounter various strange problems. Fortunately, it is basically a one-time job, and personal and team experience can be gradually accumulated.

3) Functional development is different in every industry and project. During the development process, comply with software engineering specifications, ensure code quality, dig fewer holes, work steadily, and gradually build a stable business system. .

4) Deployment and operation and maintenance are daily tasks that run through the entire life cycle of the system. Cloud services have become the center of IT technology. Making full use of cloud services and DevOps automation will effectively improve work efficiency.

2. Java detailed knowledge points

1) Java language basics: data types, syntax, data structures, common classes, etc.

2) SpringBoot development Framework: basic structure of the project, commonly used classes, such as Controller, Service

3) Database development, MySQL, MyBatis, Flyway, AliDruid and other frameworks

4) Caching system, the most commonly used Redis

5) Message queue, ActiveMQ, RocketMQ, and RabbitMQ are all commonly used, and learning one is enough.

6) File service, upload and download, cloud storage service access method, calling SDK

7) Authentication and authentication, control interface access rights, user login, etc.

8) Asynchronous task scheduling, using the Quartz framework to asynchronously execute complex time-consuming tasks

9) Log system, LogBack, LogStash integrated configuration method

10) Service monitoring, integrating Actuator, ZooKeeper and other frameworks to achieve information collection

11) More specific industry application development, such as big data, AI, IoT, blockchain, etc.

The above is this article The Java learning guide introduced here, I hope it will be helpful to you when learning Java.