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What are the four scopes of jsp?
Satheeshgeek
- May 20th, 2008
There are 4 scopes1) page => only for that jsp page2) request => available for forwarded page3) session => till session ends4) application => thorought the whole application
Preeti Kulkarni
- Dec 29th, 2006
Page,request,session,application
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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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When jasper exceptions will occurs and why?
pradeepkmr18
- Jun 12th, 2008
If there is any problem during compilation servlet(converted jsp to servlet) Generally this jasper exception will comejava.lang.Object | +--java.lang.Throwable | +--java.lang.Excep...
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Can jsp , servlets be extended?
bharaniprasanth
- Mar 11th, 2008
By extension if you mean reusing the code ..JSP is but Servlet cannot be..Only we can include or pass the control to another Servlet back and forth but we cannot re use it like custon tags....
atulkumar81
- May 17th, 2007
Yes, JSP is extensible, because we can use custom tag, that are user defined custom tag.
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How do you manage all the request from your servlet? How it will be thread safe?
pradeepkmr18
- Jun 11th, 2008
By implementing single thread model we can make thread safe .Due to this it will create one instance per thread or request
bharaniprasanth
- Mar 11th, 2008
Servlets by default are not thread safe...But we need to take many steps to make them thread safe...like using synchronized blocks,varaibles...etc...
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Where do you use exception implicit object in JSP?
pradeepkmr18
- Jun 11th, 2008
To display the type of exceptionone.jsp<%@ page errorPage="errorpage.jsp" %><% ----- %>errorpage.jsp<%@ page isErrorPage="true" %><% out.println(exception.getMessage()); %>
vishnu.baji
- Feb 28th, 2008
We use it in error pages. We will have details of exception thrown from the previous page and we can handle actions based on the type of exception...
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How we will provide security in jsp's & servlets ?
talktoudaykumar
- Mar 2nd, 2009
One of the reasons people will use servlets is security.We can provide security in servlets in two ways1.Declaratively2.ProgramaticallyUsing this security features we can guarantee these security it...
kiran.kandem
- Nov 16th, 2008
We can provide security in JSP's and Servlets keeping the source files in WEB-INF folder.
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JSP Fragment
What is JSP Fragment?
shamli85
- Apr 2nd, 2010
JSP Fragments is a new feature of JSP 2.0 that allows page authors to create custom action fragments that can be invoked. It allows a portion of JSP code to be encapsulated into a Java object that can...
atmarammuduli
- Jul 30th, 2008
Fragments Refer to Portal Technology.Where The Portal Server Takes the JSF fragments from different portlets (Sources) and integrate in a page(portal).You can refer igoogle/my.yahoo.com for see it hap...
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What is Declaration
shakeel
- Sep 30th, 2005
? A Declaration is a block of Java code in a JSP that is used to define class-wide variables and methods in the generated class file.? ...
MD.SHAKEEL AHMAD
- Sep 30th, 2005
? A Declaration is a block of Java code in a JSP that is used to define class-wide variables and methods in the generated class file.? ...
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Can I invoke a JSP error page from a servlet?
Yes, you can invoke the JSP error page and pass the exception object to it from within a servlet. The trick is to create a request dispatcher for the JSP error page, and pass the exception object as a javax.servlet.jsp.jspException request attribute. However, note that you can do this from only within controller servlets.If your servlet opens an OutputStream or PrintWriter, the JSP engine will throw...
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How the jsp changes will be effected in servlet file after converting?
khan.nomanahmed
- Jan 30th, 2007
Before executing server checks timestamp of the jsp file and previous generated servlet file. If they differs jspc compiler recompiles it.
nitin
- Dec 16th, 2005
First whenever u save your jsp file it will recompile at that time it will create a servlet file .so whenever ur saving a jsp file the jsp engine will create a servlet file.
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In Oracle table some fields are "null".By default it will show as "null" in JSP page text box.But i dont want that. I want as blank textbox.What i can do for that?
umasank
- Feb 17th, 2006
You can use the wasNull() method of ResultSet to find if the column read in the table has a NULL and then set the bean value as you want.
ejazazeem79
- Dec 9th, 2005
One way is to use NVL(fieldName, ' ') in the SQL Query and the other one is to use ?: operator in java/jsp/servlet while get value from Resultset i.e. (fieldName == null)? " " : fieldName;
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In one class i stored the key and values in the hashmap.so using key value i have to check wheterthe value for key is correct or not.so howto retreive the key and values in jsp page
rameshkumar
- Jul 20th, 2006
You can place the HashTable inside the setAttribute() method of the request object so that it can be accessed in the other page using the getAttribute() method.
d_shrivastava
- Feb 8th, 2006
You can use the tag lib. of struts for the same.iterator will help you.you can get the value.
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How can i restrict the user from Clicking of Back button in anybrowser
Rizwan
- May 18th, 2006
Hi just write the code as history.forward() in javascript head tagthats alleghistory.forward()thts all
javamatrix
- Nov 17th, 2005
You will need to set the appropriate HTTP header attributes to prevent the dynamic content output by the JSP page from being cached by the browser. Just execute the following scriptlet at the beginnin...
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Which of the following statement is true for the include directive (Multiple choice) �
Skill/Topic: Programming ConstructsA) Can be used to incorporate contents from static documents�B) It offers option of sharing local variables and better run time efficiencyC) Provides benefit of automatic recompilation.�D) It is processed during translation and compilation and does not impose any restrictions on output buffering�
Ashique
- Aug 13th, 2008
A, B and D are seems to be correct.Because A) the include directive allows you to bring in code from another file without re-writing the code.B) As this inclusion of file is done during compilation ti...
snavanethakrshnan
- Aug 12th, 2008
It is processed during translation and compilation and does not impose any restrictions on output buffering
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Java Server Pages technology commonly called JSP technology offers the following advantages(Multiple choice) :-
Skill/Topic: FundamentalsA) Separation of dynamic and static content. B) Support for scripting and tags C) Reuse of components and tags. D) Web access layer for N-tier enterprise application architecture
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These ______________listeners are notified when attributes are added to, removed from, or replaced in any session.
Skill/Topic: JSP Thread ModelA) Session AttributeB) Servlet context attributeC) Session ListenersD) Servlet context listeners
bhumi
- Mar 18th, 2014
Servlet listener
JSP Interview Questions
Ans