試題詳解

108 For manageability purposes, you have been told to add a "count" instance variable to a critical JSP Document so that a JMX MBean can track how frequent this JSP is being invoked. Which JSP code snippet must you use to declare this instance variable in the JSP Document?
(A) ＜jsp:declaration＞int count = 0;＜jsp:declaration＞
(B) ＜%! int count = 0; %＞
(C) ＜jsp:declaration.instance＞int count = 0;＜jsp:declaration.instance＞
(D) ＜jsp:scriptlet.declaration＞int count = 0;＜jsp:scriptlet.declaration＞