1, jsp script:
(1) <% java code%>
<h3>
<%
out.println("Today is the Seventieth Anniversary of the founding of the People's Republic of China.");
%>
</h3>
In the page output:
<h3>
<%
int a=9,b=9;
System.out.println(a*b);
%>
</h3>
Output of the operational result in the console.
It will be translated to the internal service method.
After the translation is:
int a=9,b=9; System.out.println(a*b);
(2) <% = java variable or expression>
<h3>
<%=123%>
</h3>
<h3> <%int a=9;%> <%=(a*a)%> </h3>
It will be translated into an internal service methods out, println ();
Namely: output to the page.
(3) <%! Java code%>
<h3> <%! String string="Today is the Seventieth Anniversary of the founding of the People's Republic of China.";%> <%=string%> </h3>
plus! After the number is translated to the position of the members, or the translation to the internal service method.
2, Note: <% - -%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>jsp</title> </head> <body bgcolor="aqua"><%--注释--%> <h3> <%! String string="Today is the Seventieth Anniversary of the founding of the People's Republic of China.";%> <%=string%> </h3> </body> </html>