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NEW QUESTION NO: 10
Assume a JavaBean com.example.GradedTestBean exists and has two attributes. The attribute name of type java.lang.string and the attribute score is of type jave.lang.Integer.
An array of com.example.GradedTestBean objects is exposed to the page in a request-scoped attribute called results. Additionally, an empty java.util.HashMap called resultMap is placed in the page scope.
A JSP page needs to add the first entry in results to resultMap, storing the name attribute of the bean as the key and the score attribute of the bean as the value.
Which code snippet of JSTL code satisfies this requirement?
A. <c:set var="resultMap" property="${results[0].name}">
value="${results[0].score}" />
B. <c:set target="${resultMap}" property="${results[0].name}">
value="${results[0].score}" />
C. <c:set var="resultMap" property="${results[0].name}">
${results[0].value}
</c:set>
D. ${resultMap[results[0].name] = results[0].score}
E. <c:set var="${resultMap}" key="{results[0].name}"
value="${results[0].score}" />
Answer: B
NEW QUESTION NO: 11
A session-scoped attribute is stored by a servlet, and then servlet forwards to a JSP page. Which three jsp:useBean attributes must be used to access this attribute in the JSP page? (Choose three.)
A. bean
B. type
C. name
D. beanName
E. id
F. scope
Answer: B,E,F
NEW QUESTION NO: 12
Which is a benefit of precompiling a JSP page?
A. It provides the ability to debug runtime errors in the application.
B. It avoids initialization on the first request.
C. It provides better performance on the first request for the JSP page.
D. It avoids execution of the _jspService method on the first request.
Answer: C
NEW QUESTION NO: 13
Given an HttpServletRequestrequest and HttpResponseresponse, which sets a cookie "username" with the value "joe" in a servlet?
A. request.setCookie("username", "joe")
B. request.addCookie("username", "joe")
C. response.addHeader(new Cookie("username", "joe"))
D. response.addCookie(new Cookie("username", "joe"))
E. response.addCookie("username", "joe")
F. request.addHeader(new Cookie("username", "joe"))
G. request.addCookie(new Cookie("username", "joe"))
Answer: D
NEW QUESTION NO: 14
A servlet class is injected with a JDBC data source. After injection has occurred, the servlet needs to create a cache out of some of the data in the database, so as to improve responsiveness.
Which two methods can host the cache creation code? (Choose two)
A. Servlet.init()
B. Servlet.destroy()
C. A method annotated with @Init
D. A method annotated with @PostConstruct
E. A method annotated with @PreDestroy
F. A method annotated with @Resource
Answer: A,D
Explanation/Reference:
A: Because the Servlet init() method is invoked when the servlet instance is loaded, it is the perfect location to carry out expensive operations that need only be performed during initialization. By definition, the init() method is thread-safe. The results of operations in the HttpServlet.init() method can be cached safely in servlet instance variables, which become read-only in the servlet service method.
D: Example:
@PostConstruct
private void init() {
cached = (Cached) ctx.lookup(EJB_PATH + Cached.class.getSimpleName());
NEW QUESTION NO: 15
Given a web fragment jar file, where should we put the web fragment.xml inside the jar file?
A. META-INF/services
B. META-INF
C. WEB-INF/classes
D. WEB-INF/lib
E. WEB-INF
Answer: B
NEW QUESTION NO: 16
APIs for dynamically registering servlets and filters can be called at:
A. There is no way to dynamically register servlets and filters
B. Context destruction time
C. Context initialization time
D. Any time
E. Injected into a servlet context
Answer: C
NEW QUESTION NO: 17
Click the Exhibit button.
Given the HTML form:
1. <html>
2. <body>
3. <form action="submit.jsp">
4. Name: <input type="text" name="i1"><br>
5. Price: <input type="text" name="i2"><br>
6. <input type="submit">
7. </form>
8. </body>
9. </html>
Assume the product attribute does NOT yet exist in any scope.
Which code snippet, in submit.jsp, instantiates an instance of com.example.Product that contains the results of the form submission?
A. <jsp:useBean id="product" type="com.example.Product">
<jsp:setProperty name="product" property="name"
value="<%= request.getParameter( "i1" ) %>" />
<jsp:setProperty name="product" property="price"
value="<%= request.getParameter( "i2" ) %>" />
</jsp:useBean>
B. <jsp:useBean id="com.example.Product" />
<jsp:setProperty name="product" property="*" />
C. <jsp:useBean id="product" class="com.example.Product" />
${product.name = param.i1}
${product.price = param.i2}
D. <jsp:useBean id="product" class="com.example.Product">
<jsp:setProperty name="product" property="name"
param="i1" />
<jsp:setProperty name="product" property="price"
param="i2" />
</jsp:useBean>
Answer: D
NEW QUESTION NO: 18
ServletContextListeners are invoked in
A. Random order
B. contextInitialized and contextDestroyed are invoked in the order in which they are declared in the web.xml
C. contextInitialized method are invoked in the order in which they are declared in the web.xml and the contextDestroyed method is invoked in the reverse order in which they are declared in the web.xml
D. contextInitialized and contextDestroyed are invoked in the reverse order of which they are declared in the web.xml
Answer: C
Explanation/Reference:
public interface ServletContextListener
extends java.util.EventListener
Interface for receiving notification events about ServletContext lifecycle changes.
In order to receive these notification events, the implementation class must be either declared in the deployment descriptor of the web application, annotated with WebListener, or registered via one of the addListener methods defined on ServletContext.
Implementations of this interface are invoked at their contextInitialized(javax.servlet.ServletContextEvent) method in the order in which they have been declared, and at their contextDestroyed (javax.servlet.ServletContextEvent) method in reverse order.
NEW QUESTION NO: 19
Which is a valid value for the enum EmptyRoleSemantic in Javax.servlet.annotation.ServletSecurity?
A. ADMIT
B. PERMIT
C. EXCLUDE
D. DENYALL
E. ALLOWALL
Answer: B
Explanation/Reference:
Reference: http://tomcat.apache.org/tomcat-7.0-doc/servletapi/javax/servlet/annotation/ ServletSecurity.EmptyRoleSemantic.html
NEW QUESTION NO: 20
A developer wants to make a name attribute available to all servlets associated with a particular user, across multiple requests from that user, from the same browser instance.
Which two provide this capability from within a tag handler? (Choose two)
A. pageContext.setAttribute("name", getSession() );
B. pageContext.setAttribute("name", theValue);
C. pageContext.getSession().setAttribute("name", theValue);
D. pageContext.setAttribute("name", theValue, PageContext.SESSION_SCOPE);
E. pageContext.getRequest().setAttribute("name", theValue);
F. pageContext.setAttribute("name", theValue, PageContext.PAGE_SCOPE);
Answer: C,D