so Webpages with identical formats usually replicate layout code; for example, Figure 1 shows a Webpage containing header, footer, sidebar, and main content sections. In the example listed above ...

In his latest Java Design Patterns column, David Geary explores how to implement the Composite pattern and how to use it with the Tiles tag library from the Apache Struts application framework.

the sidebars and footers of the blog feature gadget areas for the addition of content and advertisements. A gadget-placement space is not available by default above the header area of the blog.