In this chapter, we've taken our first real steps into developing Seam applications. We've looked into Seam components and learned that they are declared with the @Name annotation. We've seen how we can inject and outject Seam components by using the @In and @Out annotations respectively. After learning about Seam components, we wrote a simple Seam application using these concepts, which shows the layout for Seam applications.
In the second half of this chapter, we looked at how to add validation to Seam components and how to display validation errors and special messages on web pages, both around input components and in a list on the page.
In the sample application that we built in this chapter, everything took place within a single JSF page. In the next chapter, we'll look at page flow within Seam applications, and show how we can easily build up complex routing mechanisms to navigate between pages.