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How do I have the JSP-generated servlet subclass my own custom servlet class, instead of the default?
One should be very careful when having JSP pages extend custom servlet classes as opposed to the default one generated by the JSP engine. In doing so, you may lose out on any advanced optimization that may be provided by the JSPengine. In any case, your new superclass has to fulfill the contract with the JSPngine by: Implementing the HttpJspPage interface, if the protocol used is HTTP, or implementing...
ramesh.sukka
- Apr 16th, 2009
you cannot control the naming convention of JSP generated servlet. Web container should take care of t. so ideally you cannot have custome name for JSP generated servlet.Regards,Ramesh Sukka
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What are the implicit objects available in JSP 3.0
ahamza59
- Jun 6th, 2009
From my knowledge, there is no JSP 3.0. The final version released of JavaServer Pages Specification is Ver.2.1, that leverages the Servlet 2.5 specification for its web semantics. The implicit object...
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State true or false -- We can implement an interface in JSP
Skill/Topic: Programming ConstructsA) TrueB) False
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Can we implement the printable interface in jsp? if yes, how?
itsvenuhere
- Jul 28th, 2009
We cannot implement the interfaces directly in JSP.We can implement the Interfaces in Java by using implements keyword.
jaiswal.pankaj10
- Apr 8th, 2006
Very easy, just define a class that implement the Printable interface and then import that class and use the print() method.public class myPrintable implement Printable {public int print(Graphics gr, PageFormat pf, int pageIndex) throws Exception { super(gr, pf, pageIndex);}
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HiWhat is the structure of MVC1?What is the structure of MVC2?Clearly i want to know jsp,servlets...which acts as view,controller,model in both
latika.singhal
- Sep 10th, 2009
MVC I:
1) Client sends a request to the JSP (View)
2) JSPs interact with the JAVA Bean
3) JAVA Bean communicates with the Enterprise Servers/ DB Servers.Madhavi
- May 30th, 2007
MVC1---------JSP acts as both VIEW and ControllerMVC2---------JSP acts as VIEW and Servlet acts as Controller
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Why there is no constructor in Servlet?
Servlet is Java class. Then why there is no constructor in Servlet? Can we write the constructor in Servlet
jontyjonty
- Sep 10th, 2009
We can have parameterized constructors for servlet. Explanation:Consider this example class One implements Servlet{}-> now One is a java class having all the special features of a servlet.-> so just ...
san.manish
- Apr 8th, 2009
A servlet is just like an applet in the respect that it has an init() method that acts as a constrcutor. Since the servlet environment takes care of instantiating the servlet, an explicit constructor ...
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How to disable browser "Back" and "Forward" button from a JSP page?
ishar.Gsingh
- Dec 20th, 2009
JSP runs on server. You can get some information about the server but not about the client. You probably can do this with javascript.
batswon
- Jul 14th, 2008
Buttons are not disabled but when you click on them action is not performedif you have no common .js file for all pages include follwing in all jsp pageswindow.history.forward(1);
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How can you store ArrayList values in a session obj? Explain.
ishar.Gsingh
- Dec 20th, 2009
HttpSession session = request.getSession();List list = new ArrayList();list.add("Hello World");list.add("Perfect World");session.setAttribute("listObject", list);
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When we deploy an application into a server, to which servlets these JSP will convert into?
ishar.Gsingh
- Dec 20th, 2009
When you deploy an application the JSP's are never converted to servlets until first request. When first request comes in, for example my.jsp will be converted to my_jsp.java then my_jsp...
subhas2008
- Jul 28th, 2008
JSP?is ?converted to a servlet called??translated servlets which contains _JspInit(), _JspService and _JspDestroy() methods.
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What is the difference between jsp and servlet life cycles?
ishar.Gsingh
- Dec 20th, 2009
Amendment to the Neha's Answer:Jsp's are never converted to the .java source code until the first request asks it. On ther hands you can pre initiate the servlets
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Java Server Pages specification includes (Multiple choice)
Skill/Topic: Programming ConstructsA) Script language declarations, scriplets and expressions. B) JSP standard actions. C) JSP standard directivesD) A portable tag extension mechanism.
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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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Java Web application project Issue
hi,Actually i m doing my project on java, its a web application project.i am generating the reports from jdbc. but the requirement is it should has to print in the form of MS-Excel. i used the poi api but i m not getting it out. can u help me please....
lakshmi.sfware
- Apr 20th, 2010
Mr. Vijay. I didn't undestand your query properly. I am assuming your problem like this you want your output in the form of excel sheets I mean like a table. Yes it is possibleFirst of ...
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Users Count
How to count the number of users who logged on to a website?
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How to print a text file in java script?
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What is the different between _jspInit() and jspInit()?
Vikas.Barsainya
- May 15th, 2010
Here is the skeleton of HttpJspBase class which is developed by tomcat developers.You might have a clue from this for all related answers. public abstract class HttpJspBase extends HttpServlet { ...
shunmugababu
- Nov 26th, 2008
You cannot override _jspInit() whereas it is possible to override jspInit().
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What is the difference between a uri and a url?
rishimasurkar
- Jul 6th, 2010
A URI identifies a resource either by location, or a name, or both. Whereas A URL is a specialization of URI that defines the network location of a specific resource.
jpjitendrapal
- Oct 19th, 2008
The idea is that a URL is a mechanical link to a resource's location, where it can be downloaded. For this reason, a URL contains a hostname and a local part, all of which can be resolved anywh...
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What is the difference between servletcontext and pagecontext?
ramu.maloth5
- Aug 26th, 2010
ServlrtContext: one web Application have only one ServletContext object.Pagecontext: every page have pagecontext object.
ishar.Gsingh
- Dec 20th, 2009
servletcontext ==> One per webapp. Accessible by all Jsp's servlets across the webapplication.pagecontext ==> Is to retrieve the attributes from all of scope. One use this object when you d...
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Plotting graphics in JSP
How to generate a graph using real time data in jsp.
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How do you use "synchronized" blocks?
Is there other way to prevent next thread to access the resource with out using "synchronized" blocks?
Deepak agnihotri
- Nov 30th, 2010
We can use thread local variable as an alternative to synchronization.
Nishant jain
- May 7th, 2006
there is a way to do so, but its a bit complex and has be done by a programmer.Well u can implement the semaphore architecture using the the semaphore variable.this can be done as following:take a boo...
JSP Interview Questions
Ans