Because now is the graduation season, 9 million college students have come out of the four-year university to find employment in society, and the cruel reality continues to hit them. The college students who have just stepped into the society realize how difficult it is to find a satisfactory job, especially if it is a professional technical professional. Some students majoring in computer science are more difficult to find a job, because the knowledge they learn in school is difficult for them to gain a foothold in society. Enterprises have high requirements for technology, and the technology of schools and enterprises is out of touch, and they have learned technology for too long. Many Java methods have been abandoned, and poor computer majors are still learning technologies that were abandoned a few years ago, etc., making it difficult for graduates to find employment.
As a graduate, what are the necessary knowledge to find a Java internship?
professional skill:
The first stage-Java basics
The JavaSE foundation is the starting point for intermediate Java programmers, and is the only way to help you from novice to knowing programming.
There are 6 sub-modules of learning in the Java basic section:
- Basic grammar can help you establish basic programming logic thinking;
- Object-oriented, writing beautiful Java programs in an object-oriented manner;
- Collection, necessary technology for storing data in later development;
- IO, read and write basic operations on disk files;
- Multithreading and concurrency to improve program efficiency;
- Abnormal, the logic of writing code is more sound;
- Network programming, application server learning basics, complete remote data transmission.
Learning this stage, you can complete some simple management systems, tank battle games, QQ communications, etc.
Phase 2-Database
Database is not only a compulsory course for Java development engineers, but also a skill that other languages need to master. Used to store customer data during the interaction.
This section includes relational databases and non-relational databases.
For example: MySQL, oracle, redis, MongoDB, etc.
After learning the database, you can store the data in the database, or query the data from the database through SQL statements, and combine with the Java project to save the data of the dynamic site.
The third stage-front-end technology
The Javaweb stage includes front-end, database and dynamic web pages. Javaweb is an introductory course for Internet projects, and it is the basis for learning advanced courses later.
First, let's take a look at the front-end section. This section mainly includes the following modules:
- HTML5, the markup language for web page creation;
- CSS, beautify the HTML production webpage;
- JavaScript, a scripting language embedded in the page, with logic;
- Vue, the front-end framework, simplifies the operation of interacting with the server. A good interaction experience for users is essential.
After learning the front-end technology, you can complete the preparation of front-end projects similar to Jingdong and Taobao.
The fourth stage-dynamic web technology
Dynamic web pages are the foundation of server-side programming for intermediate programmers and are a necessary course for advanced framework learning. The framework and service bottom layers for later learning are all based on dynamic web technology.
This section includes the core technologies of Javaweb, including Servlet, Request, Response, Cookie, Session, etc. Through the learning of these technologies, dynamic site development can be completed, which can better complete the server-side interaction with customers, and make the data on the page "live" , Make a small application system.
The fifth stage-programming enhancement
Programming enhancement is to make an in-depth understanding and application of solving practical problems. It is an enhancement of the JavaSE foundation, and supports the automatic framework and the underlying understanding of some service frameworks.
The programming enhancement section mainly includes the following modules: multi-threaded advanced, involving thread memory, thread communication, etc.; JVM optimization, tuning the bottom layer of JVM to improve project execution efficiency; NIO, synchronous non-blocking IO to improve efficiency.
At this stage, you can optimize the original project to make the program faster and more stable.
Phase 6-Software Project Management
The JavaSE foundation is the starting point for intermediate Java programmers, and is the only way to help you from novice to knowing programming.
There are 6 sub-modules of learning in the Java basic section: basic grammar, which can help you establish basic programming logic thinking; object-oriented, object-oriented to write beautiful Java programs; collection, the necessary technology for storing data in later development; IO , Read and write basic operations on disk files; multithreading and concurrency to improve program efficiency; abnormalities, writing code logic is more sound; network programming, application server learning basics, complete remote data transmission.
Learning this stage, you can complete some simple management systems, tank battle games, QQ communications, etc.
Stage Seven-Hot Technology Framework
It is completely possible to use Javaweb for enterprise-level development, but the development efficiency is relatively low, so encapsulating common logic operations forms a framework, so the framework is an introductory skill for enterprise development.
The mainstream frameworks in the popular framework sector are as follows: Spring framework, which occupies a dominant position, and its ecosystem involves various solutions; MyBatis framework, uses ORM ideas to operate databases.
After studying in this section, real enterprise-level project development can be carried out, and the projects made will be more in line with enterprise requirements.
Phase 8-Distributed Architecture Solution
With the development of the Internet, business complexity and user experience need to be improved, so a distributed architecture has emerged. This section mainly explains the related solutions of distributed architecture.
It mainly includes the following modules: Dubbo, a high-performance RPC service publishing and calling framework; SpringBoot, to simplify the initial construction and development process of Spring applications; Spring Cloud, an ordered collection of a series of frameworks, such as service discovery registration, configuration center, and load balancing , Circuit breakers, data monitoring, etc.
The study of this sector can have the necessary technology and practical experience for the development of large-scale Internet projects, laying the foundation for entering BATJ.
Stage 9-server middleware
The middleware sector is a must in large Internet projects. Service middleware can help each sub-module to achieve mutual access, message sharing or unified access and other functions. It includes remote service framework middleware, such as Alibaba (Apache) RPC framework Dubbo, etc.; message queue middleware, such as Alibaba's open source distributed middleware RocketMQ, high-throughput message publishing and stream processing service Kafka, etc.
Learning service middleware is a necessary technology for intermediate JavaEE engineers and a technology that JavaEE architects must be proficient in.
Stage 10-Server Technology
Regardless of whether you use native Javaweb for development or framework development, the project will eventually need to be released externally to be accessible to people all over the world, and the server section can solve this problem, so the server is a necessary technology for project release. This section includes the learning of virtualization and web application servers, mainly including the following modules: Vmware, virtual machine software; Linux, a system dedicated to servers; Nginx, a reverse proxy server for cluster deployment; Tomcat, which is mainly used when the project is released The server used.
After learning in this section, we can publish the developed project to the server, and then provide your friends for remote access, super cool!
Phase 11-Container Technology
Containerization technology has been a hot topic in the past two years. The environment can be packaged through containerization technology, which is convenient for transplantation and greatly improves development efficiency. This section includes containerization technology Docker and its platform management engine Kubernetes. Among them, Docker is an open source application container engine that can package applications and dependent packages into a portable image, and then publish it to any popular Linux or Windows machine , Virtualization can also be achieved. Kubernetes is an open source that is used to manage containerized applications on multiple hosts in the cloud platform. The goal of Kubernetes is to make the deployment of containerized applications simple and efficient. Through the study of this section, you can quickly build an environment through the above technologies, save development time and improve development efficiency.
Phase 12-Business Solution
Although we already have basic technology and high-level technology, we need to explore the business solutions of actual projects if we want to connect with enterprise development. And this section is a collection of real solutions in actual business scenarios. Common business solutions are as follows: search business scenario solutions, log collection and analysis scenario solutions, workflow engine scenario solutions, task scheduling scenario solutions, Map development platform scenario solutions, payment open platform scenario solutions, chart visualization scenario solutions. By analyzing the actual business to learn this solution technology set, you can reach the level of intermediate or even senior engineer.
By the way, I am currently working as a Java developer. If you encounter any questions about learning methods, learning routes, learning efficiency, etc. during the introductory learning of Java, you can apply to join my Java novice learning exchange group : 537864251, there are a lot of beginners who are learning Java technology. You can also come to me directly if you lack the basic video tutorials. I have the latest Java basics and intensive video tutorials. The group file also contains me doing Java technology. Some study manuals, interview questions, development tools, PDF documents, books and tutorials compiled during this time.
You must know these things to find a Java internship:
The company's technical requirements for internship positions are not high, because the company understands that you have no work experience, so it will only give you some simple functional requirements. A company recruiting interns pays more attention to the overall quality of the person.
1. Do you have cultivable value
Every company hopes to reserve some valuable talents, so the company is most valued in this regard. You must prove your learning ability, what awards you have won and what you have done.
2. Talk about temperament
The interview process is to let the other party know all your strengths in a short period of time. Now companies attach great importance to a person's expression and communication skills. After entering the company, the team needs to cooperate with each other, and good communication can greatly improve efficiency. Give others a good impression, don’t dress too fancy, simple and clean.
3. Confidence
A confident person reveals the feeling of sunshine all over his body, and his voice should be loud and natural. Hold your head up and answer the interviewer’s questions positively during the interview. Because I have interviewed many people, I know exactly what kind of people I like to recruit Java interns. The above are my three essences. Meet the above professional skills and the following three requirements, any company will accept you, because you are an excellent person.