You have been introduced to the standard actions used for forwarding and including, embedding applets, and interacting with JavaBeans. These standard actions will be used throughout the later chapters in this book.
Finally, the chapter introduced the Expression Language, and you have seen the syntax and rules associated with it. You will come across this language in various other places as you read the later chapters in this book. Remember though that the EL is new to JSP 2.0, and not all containers support it.
In the last three chapters, you have been exposed to what JavaServer Pages are, and where they fit into the wider Java 2 Enterprise Edition picture. You have also seen that JSPs are part of what are commonly referred to as Web applications. Chapter 4, "Deploying JSP in a Web Container," will discuss how these Web applications are deployed.