What is the function of the import command of the page directive in JSP?

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In JSPWhat is the function of the import command of the page directive?

Introduction to jsp:

The full name of JSP is Java Server Pages, which is a dynamic web page technology. JSP is actually a file formed after inserting java code and JSP tags into html, and the file name ends with .jsp.In fact, JSP is a servlet.
Writing html in servlet is more painful, and writing JSP is like writing html, but compared with html, html can only provide users with static data, that is, static pages, and Jsp technology allows java to be nested in pagescode to provide users with dynamic data to form dynamic pages.It should be noted that it is best to only write java code for dynamic output in JSP.

Workflow of JSP
The process of converting JSP files into .java files and compiling them into .class files is all done by tomcat. There is a translation engine inside tomcat.When the JSP page is accessed for the first time, the translation engine converts it into a .java file and compiles a .class file.Then run the class file again.
The html code in JSP will be translated into out.write() in servlet

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The following author describes the introduction of the import command function of the page directive in JSP, as follows:

import command function: Import multiple packages Notes: 1. The import command can specify multiple values ​​at the same time, and multiple values ​​can be used to separate them2. The import command can appear multiple times in the document

Example:

<%@ page import="java.util.*","java.io.*","java.awt.*" %>or<%@ page import="java.util.*"%><%@ page import="java.io.*","java.awt.*" %>