Given an HttpServletRequest request and an HttpServletResponse response:
41.HttpSession session = null;
42.// insert code here
43.if(session == null) {
44.// do something if session does not exist
45.} else {
46.// do something if session exists47. }
To implement the design intent,which statement must be inserted at line 42?()
A.session = response.getSession();
B.session = request.getSession();
C.session = request.getSession(true);
D.session = request.getSession(false);
E.session = request.getSession("jsessionid");
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A.It can be invoked only from the doGet or doPost methods.
B.It can be used independently of the getRemoteUser method.
C.Can return "true" even when its argument is NOT defined as a valid role name in the deployment descriptor.
D.Using the isUserInRole method overrides any declarative authentication related to the method in which it is invoked.
A.<realm-name>
B.<url-pattern>
C.<description>
D.<web-resource-name>
E.<transport-guarantee>
A.<realm-name>
B.<auth-method>
C.<security-role>
D.<transport-guarantee>
E.<web-resource-collection>
A.Every
B.A
C.A given tag can apply to only one
D.A given
E.It is possible to construct a valid
A.The session object must be declared explicitly.
B.The request and response objects are available implicitly.
C.The output stream is available through the implicit outStream object.
D.The servlet context is available through the implicit servletContext object.
E.The JspContext for the tag file is available through the implicit jspContext object.
You are creating a content management system (CMS) with a web application front-end. The JSP thatdisplays a given document in the CMS has the following general structure:
1. <%-- tag declaration --%>
2. <t:document>
...
11. <t:paragraph>... <t:citation docID=’xyz’ /> ...</t:paragraph> ...
99. </t:document>
The citation tag must store information in the document tag for the document tag to generate a referencesection at the end of the generated web page. The document tag handler follows the Classic tag model andthe citation tag handler follows the Simple tag model. Furthermore, the citation tag could also be embeddedin other custom tags that could have either the Classic or Simple tag handler model.
Which tag handlermethod allows the citation tag to access the document tag?()
A.public void doTag() {JspTag docTag = findAncestorWithClass(this, DocumentTag.class); ((DocumentTag)docTag).addCitation(this.docID);}
B.public void doStartTag() {JspTag docTag = findAncestorWithClass(this, DocumentTag.class); ((DocumentTag)docTag).addCitation(this.docID);}
C.public void doTag() {. Tag docTag = findAncestor(this, DocumentTag.class); . ((DocumentTag)docTag).addCitation(this.docID);. }
D.public void doStartTag() {. Tag docTag = findAncestor(this, DocumentTag.class); . ((DocumentTag)docTag).addCitation(this.docID);. }
Given:
3.public class MyTagHandler extends TagSupport {
4.public int doStartTag() {
5.// insert code here
6.// return an int
7.}
8.// more code here
...
18.}
There is a single attribute foo in the session scope.
Which three code fragments,inserted independently atline 5,return the value of the attribute?()
A.Object o = pageContext.getAttribute("foo");
B.Object o = pageContext.findAttribute("foo");
C.Object o = pageContext.getAttribute("foo",PageContext.SESSION_SCOPE);
D.HttpSession s = pageContext.getSession();Object o = s.getAttribute("foo");
You have built your own light-weight templating mechanism. Your servlets, which handle each request,dispatch the request to one of a small set of template JSP pages. Each template JSP controls the layout ofthe view by inserting the header, body, and footer elements into specific locations within the template page.The URLs for these three elements are stored in request scoped variables called, headerURL, bodyURL,and footerURL, respectively. These attribute names are never used for other purposes.
Which JSP codesnippet should be used in the template JSP to insert the JSP content for the body of the page?()
A.<jsp:insert page=’${bodyURL}’ />
B.<jsp:insert file=’${bodyURL}’ />
C.<jsp:include page=’${bodyURL}’ />
D.<jsp:include file=’${bodyURL}’ />
E.<jsp:insert page=’<%= bodyURL %>’ />
Click the Exhibit button.
A servlet sets a session-scoped attribute product with an instance of com.example.Product and forwards toa JSP.
Which two output the name of the product in the response?()
A.${product.name}
B.<jsp:getProperty name="product" property="name" />
C.<jsp:useBean id="com.example.Product" /><%= product.getName() %>
D.<jsp:getProperty name="product" class="com.example.Product" property="name" />
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Click the ’Select and Place’ button.Place the events in the order they occur.
Which ensures that a JSP response is of type "text/plain"?()
Click the ’Select and Place’ button.Place the events in the order they occur.
Click the ’Select and Place’ button.Place the events in the order they occur.
Your IT department is building a lightweight Front Controller servlet that invokes an application logic objectwith the interface:public interface ApplicationController {public String invoke(HttpServletRequest request)}The return value of this method indicates a symbolic name of the next view. From this name, the FrontController servlet looks up the JSP URL in a configuration table. This URL might be an absolute path or apath relative to the current request. Next, the Front Controller servlet must send the request to this JSP togenerate the view. Assume that the servlet variable request is assigned the current HttpServletRequestobject and the variable context is assigned the webapp’s ServletContext. Which code snippet of the FrontController servlet accomplishes this goal?()
Which is true about the web container request processing model?()