9 professional skills Java developers need to master for employment

Professional skills that Java needs to master before employment

1. Be proficient in object-oriented programming in Java language, have good programming habits, and be familiar with common Java APIs, including collection framework, multithreading (concurrent programming), I / O (NiO), socket, JDBC, XML, reflection, etc.

2. Be familiar with Java Web Development Based on JSP and servlet, have an in-depth understanding of the working principle and life cycle of servlet and JSP, skillfully write scriptless dynamic pages using JSTL and El, and have experience in Java Web project development using web components such as listener, filter and MVC architecture mode.

3. Have an in-depth understanding of spring's IOC container and AOP principle, skillfully use spring framework to manage various web components and their dependencies, skillfully use spring to manage transactions, logs and security, have experience in using spring MVC as presentation layer technology and using spring's persistence support for web project development, and be familiar with spring's integration of other frameworks.

4. Skillfully use ORM frameworks such as hibernate and mybatis, be familiar with the core APIs of hibernate and mybatis, and have an in-depth understanding of Hibernate's association mapping, inheritance mapping, component mapping, caching mechanism, transaction management and performance tuning.

5. Proficient in Web front-end development using HTML, CSS and JavaScript, familiar with jQuery and bootstrap, in-depth understanding of the application of Ajax technology in web projects, and experience in project development using front-end MVC framework (angularjs) and JavaScript template engine (handlebars).

6. Be familiar with common relational database products (mysql, Oracle), and skillfully use SQL and PL / SQL for database programming.

7. Be familiar with object-oriented design principles, have in-depth understanding of GOF design pattern and enterprise application architecture pattern and relevant experience in practical development, skillfully use UML for object-oriented analysis and design, and have experience in TDD (Test Driven Development) and DDD (Domain Driven Design).

8. Be familiar with the use of Apache, nginx, Tomcat, wildfly, Weblogic and other web servers and application servers, and be familiar with the configuration of multiple server integration, clustering and load balancing.

9. Skillfully use the product prototype tool Axure, the design modeling tools PowerDesigner and enterprise architect, the java development environment eclipse and IntelliJ, the front-end development environment webstorm, the software version control tools SVN and git, and the project construction and management tools Maven and gradle.

Note: not every item listed above needs to be familiar with. You can make corresponding targeted preparations according to the specific requirements of enterprise recruitment. Personally, I think the first six should be the minimum requirements, which are the professional skills that a java developer must have.

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