<pre> 
&lt;html>
	&lt;head>
		&lt;title>A JSP Page &lt;/title>
		&lt;body bgcolor="lightyellow">
		&lt;% 
			String firstname = request.getParameter("fname");
			String lastname  = request.getParameter("lname");
			String emailAddr = request.getParameter("email");

        	if (firstname == null) firstname = "";              //http puts null, change to ""
        	if (lastname  == null) lastname  = "";
        	if (emailAddr == null) emailAddr = "";

			if (firstname.equals(""))
				out.print("&lt;span style='color:red'>Please enter first name&lt;/span>&lt;br/>");
			if (lastname.equals(""))
				out.print("&lt;span style='color:red'>Please enter last name&lt;/span>&lt;br/>");
			if (emailAddr.equals(""))
				out.print("&lt;span style='color:red'>Please enter email address&lt;/span>&lt;br/>");
		%>

		&lt;h1>You Entered: &lt;/h1>
		&lt;table>
			&lt;tr>
				&lt;td>First Name: &lt;/td>
				&lt;td>  &lt;%= firstname %>  &lt;/td>
			&lt;/tr>
			&lt;tr>
				&lt;td>Last Name: &lt;/td>
				&lt;td>  &lt;%= lastname %>  &lt;/td>
			&lt;/tr>
			&lt;tr>
				&lt;td>Email Address: &lt;/td>
				&lt;td>  &lt;%= emailAddr %>  &lt;/td>
			&lt;/tr>
		&lt;/table>
		&lt;p>You can also enter your name after the URL in the form of: &lt;br />
		&lt;b> url?fname=xxxx&lname=yyyy&email=zzzz &lt;/b>&lt;/p>
	&lt;/body>
&lt;/html>
</pre>