Professional skills that need to be mastered before java employment
1. Proficient in object-oriented programming using the Java language, have good programming habits , and are familiar with commonly used Java APIs, including collection frameworks, multi-threading (concurrent programming), I/O (NIO), Socket, JDBC, XML, reflection, etc.
2. Familiar with Java Web development based on JSP and Servlets , have an in-depth understanding of the working principles and life cycles of Servlets and JSP, are proficient in using JSTL and EL to write scriptless dynamic pages, and have experience in using listeners, filters and other web components and MVC architecture patterns for Java Web project development.
3. Have a deep understanding of Spring's IoC containers and AOP principles, be proficient in using the Spring framework to manage various Web components and their dependencies, be proficient in using Spring for transactions, logs, security, etc., have experience in using Spring MVC as presentation layer technology and using the persistence support provided by Spring for web project development, and be familiar with Spring's integration of other frameworks.
4. Proficient in using ORM frameworks such as Hibernate and MyBatis , 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 using HTML, CSS and JavaScript for web front-end development, familiar with jQuery and Bootstrap, have an in-depth understanding of the application of Ajax technology in web projects, and have experience in project development using the front-end MVC framework (AngularJS) and JavaScript template engine (HandleBars).
6. Be familiar with commonly used relational database products (MySQL, Oracle), and be proficient in database programming using SQL and PL/SQL.
7. Be familiar with the principle of object-oriented design, have in-depth understanding of GoF design patterns and enterprise application architecture patterns and relevant experience in actual development, be proficient in object-oriented analysis and design using UML, and have experience in TDD (test-driven development) and DDD (domain-driven design).
8. Familiar with the use of web servers and application servers such as Apache, NginX, Tomcat, WildFly, Weblogic, and familiar with the configuration of multiple server integration, clustering and load balancing.
9. Proficient in using product prototype tool Axure, proficient in using design modeling tools PowerDesigner and Enterprise Architect, proficient in using Java development environments Eclipse and IntelliJ, proficient in using the front-end development environment WebStorm, proficient in using software version control tools SVN and Git, proficient in using project construction and management tools Maven and Gradle.
Note: You must be familiar with not every item listed above. You can make corresponding targeted preparations based on the specific requirements of corporate recruitment. I personally think the first 6 items should be the minimum requirements, which are professional skills that a Java developer must possess.
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