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What is a scriptlet in JSP and what is its syntax?

A scriptlet can contain any number of JAVA language statements, variable or method declarations, or expressions that are valid in the page scripting language.

Following is the syntax of Scriptlet −

<% code fragment %>

You can write the XML equivalent of the above syntax as follows −

<jsp:scriptlet>
   code fragment
</jsp:scriptlet>

Any text, HTML tags, or JSP elements you write must be outside the scriptlet. Following is the simple and first example for JSP −

<html>
   <head>
      <title>Hello World</title>
   </head>
   <body>
      Hello World!<br/>
      <%
         out.println("Your IP address is " + request.getRemoteAddr());
      %>
   </body>
</html>