JSP Expression tag

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The expression tag evaluates the scripting language expression and converts the result into a string. This result is sent back to the web user through a response object. It writes the result into the output stream of the response object.

Syntax: 

<%=  expression %>  

Example:

welcome.jsp

<html>
    <head>
        <title>Expression tag example</title>
    </head>
    <body>
        Sum of 10 and 20 = <%= 10 + 20 %>
    </body>
</html>

 

web.xml

<web-app>
 
  <welcome-file-list>
          <welcome-file>welcome.jsp</welcome-file>
  </welcome-file-list>	
 
</web-app>