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What are implicit Objects available to theJSP Page?
Implicit objects are the objects available tothe JSP page. These objects are created by Webcontainer and contain information related to aparticular request, page, or application. The JSPimplicit objects are:Variable Class Descriptionapplication javax.servlet.ServletContext The contextfor the JSP page's servlet and any Web componentscontained in the same application.config javax.servlet.ServletConfig...
Satheeshgeek
- May 20th, 2008
There are 9 implicit objects available in jsp1) Page2)pagecontext3) request4) response5) application6) session7) out8) config9) Exceptionthese are created by container..No need to declare thse objects in jsp page.. we can directly use it.
ramesh
- Aug 11th, 2007
The implicit variables on jsp are1.out2.request3.response4.config5.page6.pagecontext7.session8.exceptionsthese implicit objects are no need to declare in jsp. we can directly use. these are involved in _jspService() method.
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<%
PrintWriter print = request.getWriter();
print.println("Welcome");
>%
Suppose you access this JSP file, Find out your answer.
a) A blank page will be displayed.
b) A page with the text Welcome is displayed
c) An exception will be thrown because the implicit out object is not used
d) An exception will be thrown because PrintWriter can be used in servlets only
">Write the following code for a JSP page:<%@ page language = "java" %> <%PrintWriter print = request.getWriter();print.println("Welcome");>%Suppose you access this JSP file, Find out your answer.a) A blank page will be displayed.b) A page with the text Welcome is displayedc) An exception will be thrown because the implicit out object is not usedd) An exception will be thrown because PrintWriter can be used in servlets only
A page with the text Welcome is displayed
spring
- Apr 6th, 2009
This code will print "Welcome"request does't have any getWriter() defined, only response has.<%@ page language = "java" %><%java.io.PrintWriter print = response.getWriter();print.println("Welcome");%>
bharaniprasanth
- Mar 11th, 2008
I think we have to use Jsp Writer as a part of specification ...PrintWriter is for servlets exclusively..
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Identify the advantages of JSP over Servlet.a) Embedding of Java code in HTML pagesb) Platform independencec) Creation of database-driven Web applicationsd) Server-side programming capabilities
Embedding of Java code in HTML pages
bharaniprasanth
- Mar 11th, 2008
Also add this option...no need to learn Java thoroughly ...cricital concepts like inheritance..because most of it used as a view jsut to display the text or graphic results...Biggest Disadvantage is U need to mount a Big server like weblogic , websphere for a simple application...
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What is the difference between and response.sendRedirect(url),?
The element forwards the requestobject containing the client request information fromone JSP file to another file. The target file can bean HTML file, another JSP file, or a servlet, as longas it is in the same application context as theforwarding JSP file. sendRedirect sends HTTP temporary redirect response tothe browser, and browser creates a new request to gothe redirected page. The response.sendRedirect...
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What is the difference between and ?.
Both the tag includes the information from onepage in another. The differences are as follows:: This is like a functioncall from one jsp to another jsp. It is executed ( theincluded page is executed and the generated htmlcontent is included in the content of calling jsp)each time the client page is accessed by the client.This approach is useful to for modularizing the webapplication. If the included...
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What do you understand by JSP Actions?
JSP actions are XML tags that direct theserver to use existing components or control thebehavior of the JSP engine. JSP Actions consist of atypical (XML-based) prefix of "jsp" followed by acolon, followed by the action name followed by one ormore attribute parameters.There are six JSP Actions:
sudhakarchowdary
- Jan 17th, 2007
JSP actions are use to constructs in XML syntax to control the behavior of the servlet engine. You can dynamically insert a file, reuse JavaBeans components, forward the user to another page, or gener...
