Core Servlets and JavaServer Pages™

2.3. A Servlet That Generates HTML

Most servlets generate HTML, not plain text as in the previous example. To build HTML, you need two additional steps:

1.	Tell the browser that you're sending back HTML, and
2.	Modify the println statements to build a legal Web page.

You accomplish the first step by setting the HTTP Content-Type response header. In general, headers are set by the setHeader method of HttpServletResponse, but setting the content type is such a common task that there is also a special setContentType method just for this purpose. The way to designate HTML is with a type of text/html, so the code would look like this:

response.setContentType("text/html");

Although HTML is the most common type of document servlets create, it is ...