What's a Java Server Page?

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A JSP is an HTML page with some embedded Java code.

Here's a very simple example:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>A Simple JSP</title>
    </head>
    <body>

    <h1>Greetings!</h1>
    <p>This is a 'Hello!' from <i><%= request.getParameter("name") %></i>.</p>
    <p>How are you today?</p>
      
    </body>
</html>

When you invoke this JSP without a query string, here's what it produces:

However, if you invoke it with an appropriate query string, it gives you:

The page was last updated February 19, 2008