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單項選擇題

Your web site has many user-customizable features, for example font and color preferences on web pages.Your IT department has already built a subsystem for user preferences using the Java SE platform’s lang.util.prefs package APIs, and you have been ordered to reuse this subsystem in your web application. Youneed to create an event listener that constructs the preferences factory and stores it in the applicationscope for later use. Furthermore, this factory requires that the URL to a database must be declared in thedeployment descriptor like this:

42. 43.prefsDbURL 44. 45.jdbc:pointbase:server://dbhost:4747/prefsDB 46. 47. Which partial listener class will accomplish this goal?()

A.
B.
C.
D.

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單項選擇題

The sl:shoppingList and sl:item tags output a shopping list to the response and are used as follows:
11.<sl:shoppingList>
12.<sl:item name="Bread" />
13.<sl:item name="Milk" />
14.<sl:item name="Eggs" />
15.</sl:shoppingList>
The tag handler for sl:shoppingList is ShoppingListTag and the tag handler for sl:item is ItemSimpleTag.ShoppingListTag extends BodyTagSupport and ItemSimpleTag extends SimpleTagSupport.Which is true?()

A.ItemSimpleTag can find the enclosing instance of ShoppingListTag by calling getParent() and castingthe result to ShoppingListTag.
B.ShoppingListTag can find the child instances of ItemSimpleTag by calling super.getChildren() andcasting each to an ItemSimpleTag.
C.It is impossible for ItemSimpleTag and ShoppingListTag to find each other in a tag hierarchy becauseone is a Simple tag and the other is a Classic tag.
D.ShoppingListTag can find the child instances of ItemSimpleTag by calling getChildren() on thePageContext and casting each to an ItemSimpleTag.
E.ItemSimpleTag can find the enclosing instance of ShoppingListTag by calling findAncestorWithClass()on the PageContext and casting the result to ShoppingListTag.

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