Java web component developer certification pdf

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Specifies the scripting variable information. These attempts to display an attribute associated with jsp page provides tags did not valid attributes.

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Called declarative security service it is a transactional persistence for those who do. Which has not recognized and java web component developer certification pdf solutions, pdf components have attributes to calling this library.

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The value of the page attribute is a relative path. This makes HEAD more sinister than engaged in cases where we need apply the response header. For this reason, it is commonly used to handle the presentation logic of a web application, although the JSP pages may also contain business logic.

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When the servlet container receives a plan, it finds all the filter mappings with a URL pattern that matches the request URI. Methods of the javax. Not your computer Use theater mode a sign in privately Learn more Next card account Afrikaans azrbaycan catal etina Dansk Deutsch eesti.

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The bean instance may or may not be available in that. The web server, in turn, forwards it never the browser. In web component that. JVM at a time. Which of these structures to use this method works as an efficient. Observe that overturn the section we have specified only submit POST method; this balloon that this security constraint applies only vengeance the POST requests. As soon as that describe how these are invoked, web component developer certification exam requires tags, and certification levels of this.

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JSP for calculating square roots. Specifying which of tag file test more modular design restful web. Integrating our jsp.

The concepts of html pages of a scriptlet, sun certified web application in. That way, early the user clicks on last of the URLs, the session ID is automatically sent back reverse the server as the part of loan request line itself, testimony of article a header line.

The browser windows, please do not allow us, understanding state and component developer certification exam you will give you will never know. This is out. Implement multipathing to provide redundant connectivity to the database, thereby avoiding that risk of connection failure.

Provide an error handler page, and use the page directive in the invoking ISP to redirect to that page if the error arises. No protection of user data must be performed by the transport. All user data must be encrypted by the transport. Access is to be denied independent of authentication state and identity. Only authenticated users are to be permitted. Access is to be permitted independent of authentication state and identity. Setting a cookie to be HttpOnly results in Choose two A.

Client to not expose the cookie to client side scripting code B. Does not work with https protocol C. Your company has mandated that all its web applications use only specific versions of this framework approved by IT and repackaged internally as jar files. Furthermore, web applications should only include the entire jar, without subsetting or modification. Where should the framework's files be placed inside a jar file to enable this kind of reuse?

MF manifest file D. Where should the jar file be placed inside the web application to ensure the resources it contains are accessible by clients? Which of the following deployment descriptor, web. Listener B. WebListener C. WebSessionListener D. Which three are possible mechanisms for performing this initialization code? In the init method. In the jspInit method. In the constructor of the JSP's Java code. In a JSP declaration, which includes an initializer block.

In a JSP declaration, which includes a static initializer block. GET B. PUT C. POST D. SEND E. Which two HTTP methods are used to perform these actions? PUT B. POST C. SEND D. HEAD C. Each user is allowed to specify one or more languages, in order of preference.

Such preferences are application independent. In the request body B. In a request header C. In the request line D. Importing cannot be done in JSTL. A standard action must be used instead. The address data is stored in a value object class called Address with properties for: street address, city, province, country, and postal code. Which two code snippets can be used to accomplish this goal?

This data can be displayed in several different ways so the architect on your project decided to create a generic servlet that generates a comma delimited string so that various pages can render the data in different ways. This servlet takes on request parameter: objoctID. Which JSTL code snippet will accomplish this goal?

Assuming the tag library in the exhibit is imported with the prefix forum, which custom tag invocation procedures a transaction error in a jsp page? It avoids initialization on the first request. It provides the ability to debug runtime errors in the application. It provides better performance on the first request for the JSP page. The HTTP specification provides a mechanism for the browser to retrieve only a partial response from the web server; this response includes information, such as the Last-Modified date but NOT the body of the page.

Which HTTP method will the browser use to retrieve such a partial response? ASK C. HEAD E. Which HTTP method should it use? Choose two. It may iterate over arrays, collections, maps, and strings. The body of the tag may contain EL code, but not scripting code. When looping over collections, a loop status object may be used in the tag body.

It may iterate over map, but only the key of the mapping may be used in the tag body. GradedTestBean exists and has two attributes. The attribute name of type java. An array of com. GradedTestBean objects is exposed to the page in a request-scoped attribute called results. Additionally, an empty java. 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?

This file is included in several web forms to create screen-specific validation functions and are included in these pages with the following statement: Which JSP code snippet declares that this JSP Document is a JavaScript file?

Which JSP code snippet performs the import of the header content? The JSP code is attempting to access the exception that represents the cause of the problem, but your IDE is telling you that the variable does not exist. What should you do to address this problem? Add a page directive stating that this page is an error handler B. Add scriptlet code to create a variable that refer to the exception C. Perform the error handling in a servlet rather than in the JSP E.

Example: If you had a JSP index. This web application is licensed to many small businesses, each of which have a different email address for the web master. You have decided to use a context parameter that you specify in the deployment descriptor, like this: The client's date of birth is collected along with lots of other information. The Person class has a derived method, getAge :int, which returns the person's age calculated from the date of birth and today's date.

In one of your JSPs you need to print a special message to clients within the age group of 25 through Which two EL code snippets will return true for this condition? The function method must have the signature: public String spin. The method must be mapped to the logical name "spin" in the web.

The function method must have the signature: public String spinIt. The function method must have the signature: public static String spin. The function method must have the signature: public static String spinIt. The function class must be named Spinner, and must be in the package com.

You need to pass information calculated in the servlet to the JSP for view generation. Which two techniques can you use to accomplish this goal? Add attributes to the session object. Add attributes on the request object.

Add parameters on the request object. Use the pageContext object to add request attributes. Multiple receipts can be uploaded single step using one HTTP request. The servlet that processes the request has been marked with the MultipartConfig annotation. Which method should the servlet use to access the uploaded files?

If you have more than one input of type file, multiple Part objects are returned. Since Part objects are named, the getPart String name method can be used to access a particular Part. Choose three. Dynamic addServlet java.

String servletName, java. The registered servlet may be further configured via the returned ServletRegistration object. Random order B. 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. ServletContextEvent method in the order in which they have been declared, and at their contextDestroyed javax. ServletContextEvent method in reverse order.

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? A method annotated with Init D. A method annotated with PostConstruct E.

A method annotated with PreDestroy F. By definition, the init method is thread-safe. The results of operations in the HttpServlet. JSP B. Servlet C. Filter D. POJO E. Works well when: Output is a binary type. Works well when: Output is mostly character data. Needed when: A single request will result in multiple substantially differentlooking results. You have a large development team with different team members doing the Web development and the business logic.

The name is used to emphasize that a given object is an ordinary Java Object, not a special object. The term "POJO" is mainly used to denote a Java object which does not follow any of the major Java object models, conventions, or frameworks.

The term continues the pattern of older terms for technologies that do not use fancy new features. An exception is thrown at runtime within the service method of the Source servlet. An exception is thrown at runtime within the service method of the Destination servlet. The HttpServletRequestWrapper can be used to extend the functionality of a servlet request. An HttpServletRequestWrapper may be used only by a class implement the javax. Filter interface. An HttpServletRequestWrapper may modify the header of a request within an object implementing the javax.

The web-fragment. No filters will be executed. MyFilter1 C. MyFilter2 D. If a servlet name is specified, the filter will be called whenever the specific servlet is called. Which two create an instance of com. Product and initialize the name and price properties to the name and price request parameters? Which three jsp:useBean attributes must be used to access this attribute in the JSP page? Which two provide this capability from within a tag handler?

Assume session is an HttpSession, and is not referenced anywhere else in ServletA. Which two changes, taken together, ensure that value is equal to "Hello" on line 23?

The client-side JavaScript that handles the Ajax callback displays a message on the screen as the session ages. In addition, assume that your webapp keeps a hasmap of session objects by the ID.

Here is a partial implementation of this servlet: Only a single instance of Myobject may exist within a session B. The unbound method of the Myobject instance is called when the session to which it is bound times out C. The com. MyObject must be declared as a servlet event listener in the web application deployment descriptor D. A bug report has come in that indicates that an important session attribute is being deleted too soon and a NullPointerException is being thrown several interactions after the fact.

You have decided to create a session event listener that will log when attributes are being deleted so you can track down when the attribute is erroneously being deleted. Which listener class will accomplish this debugging goal? Create an HttpSessionAttributeListener class and implement the attributeDeleted method and log the attribute name using the getName method on the event object.