How to learn java ee?

After learning JavaSE, you can try to slowly transition to JavaEE. Java EE is a new name for J2EE. The reason for the name change is to let everyone know that J2EE is just a Java enterprise application. Of course, learning JavaEE also requires the support of many other technologies, such as database technology, web programming technology, etc. Let's learn with the editor how to learn JavaEE.

The first stage: Mastering JavaSE

This stage is the introductory stage of learning JavaEE and also the basic stage, with zero foundation for each Learners of Java must master it.

Learning requirements: We need to be proficient in basic Java syntax, object-oriented, commonly used APIs, collection frameworks, I/O technology, multi-threading technology and other commonly used technologies (network programming, reflection, design patterns).

Learning focus: The focus of this stage is to master object-oriented thinking, because thinking is the foundation and the soul of a qualified Java programmer.

After learning this stage, we can develop simple desktop software, but if our goal is to engage in enterprise-level software development, this knowledge is far from enough. We must go deeper on this basis. of learning.

Second stage: JavaWeb basics

After learning JavaSE, we should learn JavaWeb immediately. JavaWeb is also something that Java development engineers must master.

Learning requirements:

Proficient in basic front-end technologies (HTML, CSS, JavaScript, XML and XML parsing);

Common Tomcat server technologies (Servlet, Jsp, Jstl tags library);

Mysql database and JDBC technology;

Other technologies (jQuery of JavaScript framework);

Practical practice of consolidating knowledge projects (demand analysis of comprehensive cases of online shopping malls).

Learning focus: basic front-end technologies, proficiency in Servlet-related technologies, JSP-related technologies, JDBC-related technologies, JDBC thinking is particularly important.

You must be proficient and proficient in this stage of study. After learning the content of this stage, you can start to develop some online mall projects, but the development of enterprise-level applications also requires some unique framework support. These The existence of the framework greatly saves our time and improves development efficiency. So it is related to the third stage of learning.

The third stage: Master the SSH development framework

SSH development is the abbreviation of Spring, Struts2 and Hibernate framework, and it is also the mainstream Java development framework. It is every JAVA One of the things developers must learn.

Learning requirements: Proficient in spring, proficient in Hibernate and Struts2.

Learning focus: Master these three frameworks and use them skillfully.

The fourth stage: Practical project one

After studying the above three stages, you can be proficient in and master the knowledge of the basic stage plus the mainstream framework stage, and then you can develop the enterprise Level application, the accumulation of theoretical knowledge is reserved for practical combat. Therefore, at this stage, the most courses arrange practical projects for learners to implement the combination of theory and practice. Looking at this, do you think that learning can come to an end? The answer is: NO. Because of the rapid development of the times, new frameworks and technologies are constantly being derived, which is why we have a later learning stage.

The fifth stage: other development frameworks

MyBatis is an excellent persistence layer framework that supports ordinary SQL queries, stored procedures and advanced mapping.

Spring MVC is a web framework based on MVC. Spring MVC is a module of the Spring framework.

MyBatis and Spring MVC are two frameworks that are now used by many companies, so JAVA learners must master them.

Learning requirements: Proficient in MyBatis and SpringMVC

Learning focus: Proficient in SpringMVC. Not only is Spring the best for beginners, but MVC is already a very important part of modern JavaWeb development.

The sixth stage: other commonly used technologies

Look at the requirements for Java engineer positions and you will find that in addition to mastering the use of frameworks, companies also require some other commonly used technologies. There are certain technical requirements, such as JAVA project construction tool maven, oracle database, open source full-text search engine Lucene, open source search server solr, Web Service, linux and other technologies.

If we want to become an excellent JAVA developer, we must master these technologies.

Learning requirements: Understand and master Maven, Oracle, Lucene, Solr overview, WebService, and Linux.

Learning points: Oracle database processes data, Linux can configure the servers required for development, and supports many environments required for development. Maven is a project management tool. Maven can easily manage project reports and generate sites. Manage JAR files, etc.

Related learning recommendations: java basic tutorial

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