What can java EE do after learning? What can be developed? What are the main contents of learning java? Ask for expert advice

JavaOOP believes that we should master the concept of basic stratification,

Servlet technology,

JavaBean，

Oracle or any database technology,

Basic JavaScript technology,

Basic JavaSE technology,

JNDI technology,

Familiar with Tomcat or any Web container,

SSH(Spring, Struts, Hibernate) framework technology may require handwriting to be familiar with pre-configuration files.

Skilled in using Ajax open source framework,

A JSTL tag library and EL expression language foundation,

Master at least six other design patterns, such as MVC,

You can use PowerDesigner to design a database and master reading and writing XML files in Java.

Familiar with the use of configuration file *.properties.

I only know what it says. It is not difficult to see that the above are just some foundations, among which SSH framework is optional. After all, you can use JDBC to develop good network applications. Note that Java Applet are not mentioned here. Ajax is very popular now. Although you don't have to learn, it is essential to make your web page shine. The first one I mentioned is the object-oriented idea of Java. He is the basic knowledge of Java and can be said to be the most important thought in Java. He can help you develop web pages better. It is almost impossible to develop an excellent web page without learning Java at all, and you will understand it then.