Workshop

The Workshop is designed to help you review what you have learned, and help you to further increase your understanding of the material covered in this hour.

Quiz

1:	Name two ways to represent a string in a JSP EL expression contained with an attribute value.
2:	Where does JSP EL look for variables?
3:	What's the difference between order.price and order["price"]?

Answers

A1:	You can use different quotation marks, such as value='${fn:length("hello")}', or you can use \ to escape the quotes, such as value="${fn:length(\"hello\")}".
A2:	It looks in the variable scopes, starting at the page scope and proceeding through the request, session, and application scopes, using the first variable it finds
A3:	There is no difference. The only time there might be a difference is if you are accessing a member of a map with an odd-looking key like "a+b". In this case, the syntax "order.a+b" would be interpreted as "access attribute a of order and then add it to b", instead of "access attribute a+b of order."

Activity

Use a scriptlet to store some values in the request and session scopes, then use the <jsp:text> tag to write JSP EL expressions that manipulate those values. Remember that you can use JSP EL expressions within the body text of the <jsp:text> tag.