SCWCD(310-083)單項選擇題每日一練(2019.01.18)

14. 15. The tl：task tag supplies information about a single task while the tl：taskList tag does the final output. The taghandler for tl：taskList is TaskListTag. The tag handler for tl：task is TaskTag. Both tag handlers extendBodyTagSupport. Which allows the tl：taskList tag to get the task names from its nested tl：task children？（）

You are creating an error page that provides a user-friendly screen whenever a server exception occurs.You want to hide the stack trace， but you do want to provide the exception’s error message to the user sothe user can provide it to the customer service agent at your company. 
Which EL code snippet inserts thiserror message into the error page？（）

Assume the tag handler for a st：simple tag extends Simple Tag Support.
In what way can scriptlet code beused in the body of st：simple？（）

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：

Your web page includes a Java SE v1.5 applet with the following declaration：
11.<object classid=’clsid：CAFEEFAC-0015-0000-0000-ABCDEFFEDCBA’
12.width=’200’ height=’200’>
13.<param name=’code’ value=’Applet.class’ />
14.</object>
Which HTTP method is used to retrieve the applet code？（）