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What are the Implicit object in JSP?
The implicit objects in a JSP page are:requestresponsepageContextsessionapplicationoutconfigpage
What are the built in objects in jsp?
The correct term is "JSP Implicit Objects" In any JSP Page, there are a bunch of implicit objects that are available for the programmer to use. It contains a variety of information that can be used to display stuff on the page. The following JSP Implicit Objects that are available for a programmer. • request • response • out • session • config • application • page • pageContext
How many implicit objects in JSP?
There are nine implicit objects in JSP.1. pageContext2. session3. request4. response5. exception6. out7. application8. config9. page
What is JSP Implicit objects?
In any JSP Page, there are a bunch of implicit objects that are available for the programmer to use. It contains a variety of information that can be used to display stuff on the page. The following JSP Implicit Objects are available for a programmer: • request • response • out • session • config • application • page • pageContext
How do you set the session variables in jsp?
The session variables can be accessed in a jsp page from the request object. Note: Accessing session contents in JSP is not a good design practice
What are the Implicit object in JSP?
The implicit objects in a JSP page are:requestresponsepageContextsessionapplicationoutconfigpage
What are the built in objects in jsp?
The correct term is "JSP Implicit Objects" In any JSP Page, there are a bunch of implicit objects that are available for the programmer to use. It contains a variety of information that can be used to display stuff on the page. The following JSP Implicit Objects that are available for a programmer. • request • response • out • session • config • application • page • pageContext
How many implicit objects in JSP?
There are nine implicit objects in JSP.1. pageContext2. session3. request4. response5. exception6. out7. application8. config9. page
What is JSP Implicit objects?
In any JSP Page, there are a bunch of implicit objects that are available for the programmer to use. It contains a variety of information that can be used to display stuff on the page. The following JSP Implicit Objects are available for a programmer: • request • response • out • session • config • application • page • pageContext
When you forward a JSP page which built-in JSP object goes out of scope?
application
How do you call a Servlet from JSP?
I have created a .jsp file, in which, I am calling a class.method() through TagLib. REQUIREMENT is, I want to call a servlet instead of a simple class. And Servlet will get the response, and request object from Jsp, and manipulate that, and produce the response object, and control is transfered back to JSP again.
How do you set the session variables in jsp?
The session variables can be accessed in a jsp page from the request object. Note: Accessing session contents in JSP is not a good design practice
What explicit and implicit signals were used by the singer to highlight significant points of the song let it go?
[object Object]
What is difference between servlets and java server pages?
SERVLETS JSP 1. Servlet is a java class. 2. Servlet is a single instance multiple thread web application, In which HTML code can be included in java code. 3. In servlets the presentation logic and the B.logic is tightly coupled. 4. For every modification done in servlet program, we need to recompile and reload the application. 5. In servlets implicit objects are not available. 6. Servlets are supported to HTTP, FTP, and SMTP protocols. 7. Sevlets are need Deployment Descriptor file (web.xml) 1. Jsp is a file. 2. In jsp java code can be included in HTML code by using special tags. 3. In jsp's the presentation logic and B.logic are separated by defining the java beans. 4. If any modifications done in jsp's without recompiling and reloading , the modifications are reflected. 5. In jsp's implicit objects are available which is we can implement directly into jsp pages. 6. Jsp are supported to HTTP protocol only. 7. No need of Deployment Descriptor file (web.xml) rajus_1219@yahoo.co.in
What is the difference between pageContext and page implicit objects in JSP?
The page object represents the generated servlet instance itself, i.e., it is same as the "this" keyword for a Java file. As a result, you do not typically know who the super class is, and consequently do not normally make use of this object or its methods. The pageContext object represents the environment for the page, containing useful information like page attributes, access to the request, response and session objects, as well as the JspWriter referenced by out. This object also has methods for including another URL's contents, and for forwarding or redirecting to another URL. For example, to forward a request to another resource from in a JSP page, we can do that by using the pageContext variable: pageContext.forward ("other.jsp");
What are jsp actions?
JSP actions are XML tags that direct the server to use existing components or control the behavior of the JSP engine. JSP Actions consist of a typical (XML-based) prefix of "jsp" followed by a colon, followed by the action name followed by one or more attribute parameters. There are six JSP Actions: < jsp : include / > < jsp : forward / > < jsp : plugin / > < jsp : usebean / > < jsp : setProperty / > < jsp : getProperty / >
Application object and session object in detail?
Session ObjectThe session implicit object is used to provide an association between the client and the server. This association, or session, persists over multiple connections and/or requests during a given time period. Sessions are used to maintain state and user identity across multiple page requests. A session can be maintained either by using cookies or by URL rewriting. To expose whether the client supports cookies, session defines an isCookieSupportDetermined() method and an isUsingCookies() method.Servlet ClassHttpSessionThe following table summarises the most useful methods available to the session object. For more details consult the Servlet API.MethodDescriptionisNew()A session is considered to be "new" if it has been created by the server, but the client has not yet acknowledged joining the session.invalidate()Discards the session, releasing any objects stored as attributes.getAttribute(String)Retrives the object associated with the named attribute.getAttributeNames()Retrives the names of all attributes currently associated with the session.setAttribute(String, object)Sets the object to the named attribute. attribute created if it doesn't exist.removeAttribute(String)Removes the object bound with the specified name from this session.Application ObjectThis implicit object represents the application to which the JSP belongs. JSPs are grouped into applications according to their URLs where the first directory name in a URL defines the application. The application object contains methods that provide information about the JSP Container, support for logging plus utility methods for example translating a relative URL to an absolute path.Servlet Classjavax.servlet.ServletContextThe following table summarises the most useful methods available to the session object. For more details consult the Servlet API.MethodDescriptiongetAttribute(String objName)Returns the object named objName or returns null if the objName does not exist.getAttributeNames()Returns an Enumeration containing the attribute names available within the application.setAttribute(String objName, Object object)Stores the object with the given object name in this application.removeAttribute(String objName)Removes the objName object from the application.getMajorVersion()Returns the major version of the Servlet API for the JSP COntainer.getServerInfo()Returns information about the JSP Container, typically, name and product version.getResourceAsStream(Path)Translates the resource URL into an input stream for reading.log(Message)Writes a text string to the JSP Containers default log file.
