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JSP Life Cycle Benfits
What is the Life Cycle Benfits in JSP
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When jsp is compiled into servlet, where the servlet is actually stored(storage location)?
charankk
- Apr 30th, 2008
When the request from browser is coming for first time to access the jsp page.Container check whether jsp is already translated to servlet or not.If not ,it will translate the jsp to server and the as usual service method will be called to include the contents dynamically.regardsPavan kolla
Santosh M
- Jul 3rd, 2006
In Tomcat, it is stored under work directory of tomcatFor example, if your tomcat is in c: drive then it is stored in following locationC:jakarta-tomcat-5.0.28work
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How to declare static array in jsp
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What is the need of implicit objects?
lhariPrasad
- May 5th, 2008
Not only that, it makes the interface to business logic and implementation easily.
bharaniprasanth
- Mar 11th, 2008
Yes implicit objects obviate the need to explicitly import the classes for designing the JSP's
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How do you connect to the database from JSP
swapnilk
- May 15th, 2008
BO stands for Busssiness Object where you are going to do all kind of logical calculations.DAO stands for Data Access Object where you are communicating with DataBase by firing qryDTO stands for Data ...
bharaniprasanth
- Mar 11th, 2008
Why can't we use servlets instead of java beans...how does somebody hack a server side object connecting to database?
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What is the difference betweeen JSP forward and servlet forward methods?
Satheeshgeek
- May 20th, 2008
Hi guys! In my point of view, both are very similar . there is no difference between them
Nurugan P.C
- Sep 17th, 2006
Hi, there is no difference b/w jsp forward and servlet forward
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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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Hii have developed a web page.i want to restrict the user from seeing my html code from web browser how do i do that?????
hmashruf
- Jan 22nd, 2007
Hi All,How about view source option from menu bar, after disabling right click in IE? Please let me know.Thank you.
Siva Kotipalli
- Jul 26th, 2006
We can disable the Tool bar using Javascript. When we disable the tool bar and the right click then we can prevent users from viewing the code. But this only works in the browsers that support javascript.
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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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How do you pass control from one JSP page to another
Satheeshgeek
- May 21st, 2008
Hi guysthere are 3 ways to do this1) <jsp:forward>2) response.sendredirect3) forward methos of requestdispatcher
shankar
- Jun 7th, 2006
hi this is shankar...........what are the differences b/w CGI and Servlets
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What is the difference between Difference between doGet() and doPost()?
praveen7g
- Jun 5th, 2008
when you use doget() method the formfield data is passed to the server as part of query string so there is no confidential to the data ,every body can see that dataand one more is we can send very lim...
ashokbontala
- Jun 4th, 2008
The major difference between the doGet() and doPost() methods is that in doGet() method wats the paramaters is passing can be seen in url but in doPost() method we cant see the parameters in url thats the difference upto my knowledge
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, pagedirective include, action tag include ?">
What is the difference between , pagedirective include, action tag include ?
Karuna Reddy
- Jun 6th, 2008
In this case the page will be included at the time compilation. It is static include. If you have any changes that will not be reflect ie it will not display the out. In this case page will b...
praveen7g
- Jun 5th, 2008
page include is called as static include because at the time of the compilation the jspc will compile the two jsps and make it one jsp and submit to the jvm the jvm executes only one jsp at the t...
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Which of the following are the implicit objects in JSP 1. Application, out 2. config, exception 3. page, pageContext 4. request, response, session
Skill/Topic: FundamentalsA) 1, 2 B) 2, 3 C) 2, 3, 4 D) 1, 2, 3, 4
umashankars
- Jun 9th, 2008
There are four implecit objects, which are thread safe:1. request.2. response.3. exception.4. page
shazia Fatima
- Mar 10th, 2006
The answer is c not d.The implicit variable application starts with small a.It is application and not Application
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Where do you declare methods in JSP?
pradeepkmr18
- Jun 11th, 2008
In jsp declarations we can declare methods and variables<%! int x; public void tone() ...
bharaniprasanth
- Mar 10th, 2008
Declarations go outside the service method of converted servlet so ...just delcaring variables...declare it like <%! public void add(int a , int b){ //body}%>
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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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How do you write custom tags like tag library
pradeepkmr18
- Jun 11th, 2008
To develop acustom tag1)we need to write our own .tld2)for every tag in the tld we have to write tag handler classes (Generally .jar files contains the taghandler classes)using doStartTag(),doAfterBod...
bharaniprasanth
- Mar 11th, 2008
Four elements are needed1. Tag class.2. TLD descriptor3. Inclusion of the prefix elements line in Beginning of JSP4. Using the tags with a start and end tag elements...Not to forget mention the tag library in the web.xml
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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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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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If we declare a page isThreadSafe="false" then how the page will act?
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satish_bakde- Member Since Dec-2007 | Dec 7th, 2007
A JSP page is by default thread unsafe. That means when server finds a request to JSP, an instance is created and the request is processed. The code inside service method is processed. While in this process, if another request arrives, Server again starts executing the code inside service method for 2nd one. Multitasking is invoked to switch CPU between execution of these 2 threads created. Both are executing same code so, so if any thread changes a variable value and then second reads it, it will get changed one.
Though this is bad programming practise to have code like this, in case becomes unavoidable. At this time make page threadSafe="true". This will make service method synchronized and at a time only one thread will execute the code. other thread have to wait till that time. Assume how bad will be the response time of server when 100s of requests arrives at a time!bharaniprasanth
- Mar 10th, 2008
Yes which is why we use servlets instead of Jsp's for handling the web requests...
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If the cookies on the client side is disable ie., no cookies to track session. Then how one will be able to track session.thanks
mytramesh
- Oct 13th, 2006
using of the UrlRewriting we con achive this.response.encodeUrl(url);response.encodeRedirectUrl(url);First check for whether the cookies are supported by browser or not. if browser supports it return ...
JSP Interview Questions
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