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What is instance pooling ?
Deepak agnihotri
- Nov 30th, 2010
To implement single thread model container use instance pooling in this approach several instances of same servlet are stored in a pool and the instances are allocated to the incoming client requests,...
Kumarakuru
- Feb 10th, 2006
It is one of the service provided by EJB Container. It is pool of instances, which is ready to use. Instance pooling reduces the number of component instances, and therefore resources, needed to servi...
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JSP Page Object Request
In order to access the request object from a JSP page? Which step you must complete among the following:a. call the getRequest method of the JSP page.b. Use the getServletConfig method of the JSP page, then call the getRequest method of the ServletConfig object.c. There is never a good reason to access the request object from a JSP page.d. It is an implicitly defined variable.
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A] Is the response.sendRedirect ends the existing session?B] If I logged in to a site ( say a.com) & then in same browser window I type the url for another site (say b.com), then does my session gets ended on first site ( a. com ) ?
charankk
- Apr 30th, 2008
Hi Prasanth, The case is differnt here.Assume you have opened gmail.com and logged in... session will be created.Then you have tried to replace the url as yahoo.com, here the browser will identify the...
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To show money format on the JSP page we use __________ class
Skill/Topic: Programming ConstructsA) AirthmaticFormat B) CurrencyFormat C) NumberFormat D) StringBuffer
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When many Users are browsing the same application at the same time and they click the "Submit" button will many objects be created for each and every User?
umar farooq
- Jul 24th, 2011
NO, There will be one single instance of the servlet in the web-container ,when request arrives to the server a thread will be created rather creating the object. so that multiple request will have ...
vinaymudgil007
- Mar 31st, 2011
Single servlet object will be loaded in memory and one thread per request would be created by the container to serve those requests.Thanks,Vinay
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Can we use main method inside JSP? Why?
ashish
- Aug 5th, 2011
Can someone tell me...how a servlet container execute init(),service() and destroy() method in a sequential manner ?
is it true that a servlet container itself contains a main() method which call these methods ?
thanks in advance...mullangi13
- Jul 29th, 2008
We can use main method in Jsp/servlet, but there is no use. This main() method will not execute throughout the life cycle. Then why should we need to use.Generally these JSP/Servlets are server side t...
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Install Tomact
How to install tomact?
ravitejareddy
- Aug 18th, 2011
Download latest Apache tomcat and install. and set the path for that in environment variables. and deploy the project and stat up the server.
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Jasper Exception in JSP
When and why jasperException occurs?
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Transfer data in JSP
How to transfer data over multiple pages?
sampra
- Mar 28th, 2012
We can set attribute in application session or request attribute.here page wont be use ful bcz scope of page is same page only
sampra
- Mar 13th, 2012
1.page
2.session
3.request.
4.application
using these scoped variables we can translate data from one resource to another
ex: request.setAttribute("key","value");
Object o=getAttribute("key"); -
How do you call stored procedures from JSP
delindia
- Jan 3rd, 2012
We can call stored producedure using sql tags in jstl "java5 For example, calling a stored procedure that returns a result set: exec ExampleProcLoadExample ? ...
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Exception Handling in JSP
How will you handle the exception without sending to error page? How will you set a message detail to the exception object?
delindia
- Jan 3rd, 2012
Example:
The exception will be thrown inside the catch:
The exception is : ${catchException}
There is an exception: ${catchException.message}
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How to disable the expression language in a jsp?
Navdeep
- Aug 19th, 2011
We can use isEliIgnored property or we can disable by using below code..
Code- <jsp-config>
- <jsp-property-group>
- <url-pattern>*.jsp</url-pattern>
- <el-ignored>true</el-ignored>
- </jsp-property-group
- </jsp-config>
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What is the difference between relative and absolute url?
Karan
- Sep 27th, 2011
As there seems to still be confusion about the difference between relative and absolute urls, I thought I'd post a little information and a reference link for everyone. An url that is ABSOLUTE shows ...
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Which of the following statements is true about JSP tag library?
Skill/Topic: Programming ConstructsA) It defines the standard tag that works the same everywhere B) It is a single library and we can use it in multiple jsp containers C) It has support for the common structural tasks like iteration and condition. D) All of the above
An
- May 4th, 2012
D) All of the above
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JSP Comments
What are the ways to write comments in the JSP page? Give example.
RoyalB
- May 31st, 2012
By using Callable Statement like CallableStatement csmt=con.PrepareCall("{PackageName.ProcedureName}"); In jsp U can write these code with in Scriptlet
Code- span style="color: #0000ff;">"{PackageName.ProcedureName}"); %>
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What is the servlet life cycle?
Each servlet has the same life cycle:A server loads and initializes the servlet (init())The servlet handles zero or more client requests (service())The server removes the servlet (destroy()) (some servers do this step only when they shut down)
Sandhya.Kishan
- Jun 22nd, 2012
Every servlet follows the same cycle
*The servlet is initialized by calling the init () method.
*The servlet calls service() method to process a clients request.
*The servlet is terminated by calling the destroy() method.
*Finally, servlet is garbage collected by the garbage collector of the JVM.
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What information that the ServletResponse interface gives the servlet methods for replying to the client?
It Allows the servlet to set the content length and MIME type of the reply. Provides an output stream, ServletOutputStream and a Writer through which the servlet can send the reply data.
Sandhya.Kishan
- Jun 22nd, 2012
The information of buffer size, content length, content type and locale is provided to the client by the servletresponse interface.
JSP Interview Questions
Ans