yes correct.And the answer should also include that because
servlet has some methods that are inherited from super class
like...init,destroy and many more that are used to handle
the request.

We can have multiple controllers but if it is a struts 
framework then it voilates MVC design since we cannot have 
more than one controller in MVC

Servlet is a server side technology,for developing 
serverside application(web applications).

In ModelI we use Servlet and Jsp's only.jsp used for 
Presentation logic and Servlet used for Business logic & as 
Controller.

Why because- 1.for communating with DataBase
             2.for container(server)recognise java code.

To build a dynamic web page servlets are used.

yes Boss we build....refer in ur old frd GOOGLE

In servlets we have resource for developing the business 
logic but Jsp have the tags for present the output clerly.

Its for reusability purpose.jsp should be only used for
presentation purpose and our html designer,who later design
the page is not aware of java coding will not be comfortable.
and writing all buiseness logic in servlet lets the code
reusable.and for writing buiseness logic in jsp page there
are some other way like using scriplets.so why do the job
with less profit and extra work.

-->first request comes from client browser to server 
  (container)which takes the control to the web.xml file.

-->in xml file servlet file(.class) will be searched
   according to the information about the url pattern given
   in the address,then coresponding class file is loaded to
   the container(loading) by the method
   java.lang.class.forName().newInstance.

-->now container call the init(servletConfig) method to add
   necessary headers in the servlet,such as Config,context
   session,request and many more.

-->now control pass to the service()of the HttpServlet(if   
   you have extended this class) and the type of method 
   (get/post) is checked and accordingly the control will
   pass to the implemented doGet() or doPost() of the your
   class(by the dynamic method dispatch)

-->after service the container will call the destroy() of
   Servlet class.
          i hope this answer will satishfy you,thank
          you,Dipu(Deepak ku. jenamani)

when we are requesting a particular resource in the
server,the comiled class will be loaded into the container
calls the no-arg constructor and init() then the container
will create request,response objects and pass it to the
corresponding doXXX() method based on the http method of the
form,allocates a thread and do the business logic and send
the response back to the client by sending the thread to a
connection pool and destroying the request and response objects

when we are requesting a particular resource in the
server,the comiled class will be loaded into the container
calls the no-arg constructor and init() then the container
will create request,response objects and pass it to the
corresponding doXXX() method based on the http method of the
form,allocates a thread and do the business logic and send
the response back to the client by sending the thread to a
connection pool and destroying the request and response objects

advanced java is the one which deals with web application
components...servlets will deal with the business logic by
putting the html code inside java,jsp concentrates on
presentation logic by putting the java code inside html..
The EJB will act on the distribute applications which run on
the same JVM or in a remote location

advanced java is the one which deals with web application
components...servlets will deal with the business logic by
putting the html code inside java,jsp concentrates on
presentation logic by putting the java code inside html..
The EJB will act on the distribute applications which run on
the same JVM or in a remote location

Yes you can call init method in destroy.
public void destroy(){
		try {
			init();
		}
		catch(Exception e){
			
		}
	}

if suppose we take the servlet programming side then
whenever u type the URL first web browser call the service
method then create the servlet object then call the
init()method whenever we call the init method start the
proceesses of the particular object operation suppose we
call the destroy()method before completion of the particular
object operation servelet object is removed then when we r
call the service method then create the servelet object 

In the Servlet programming context, the destroy() method 
can never be called by your code and is called by the 
servlet container

In the servlet life cycle First our request calls to the 
init()method,Inside it will doing some operations related 
to the objects after that it will cal the destory() method
The destory()removes the servlet object,before calling to 
service() method.

Yes you can call a destroy() method in init() method, but 
remember destroy() method will behave like normal method 
but not as life-cycle method.

a call to the destroy method will happen and the resources
will be released and the flow will continue as it is and
will throw an exception if the released resource is used
indie the service method call.

a call to the destroy method will happen and the resources
will be released and the flow will continue as it is and
will throw an exception if the released resource is used
indie the service method call.

This action does not disturb the normal life cycle flow of the servlet. The servlet will work normal. You may test the below code.

/**
 * @author Suraj
 *
 */
public class TestServlet extends HttpServlet {
	

	public void init(ServletConfig config)throws ServletException{
		super.init(config);
	destroy();	
	}
	
	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		
		System.out.println("I am test servlet.");
	}

}

Web.xml
--------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
	<display-name>Servlet</display-name>
	<servlet>
		<servlet-name>TestServlet</servlet-name>
		<servlet-class>com.esspl.TestServlet</servlet-class>
	</servlet>
	<servlet-mapping>
		<servlet-name>TestServlet</servlet-name>
		<url-pattern>*.do</url-pattern>
	</servlet-mapping>
</web-app>
------------------------------------
Test URL: http://<HOST>:<PORT>/<Context>/TestServlet.do

do some business

join eikon technologies.............

contact kavitha....
+919449026273

U better do engineering....then u Ve a brt ftr....

first improve vocabulary,then learn what are your
strengths,choose a course to improve them further and pursue
a career in that field.

your bright future depends on your valuable right decision 
taking at right time. If you are interested in business and 
non IT, then go for MBA. If you are intersted in Computers
(IT) choose MCA in good university. Mainly i am emphasising 
on your interest bcoz, if we do the work what ever we like, 
in which we will get success and we will get unique ness in 
that work. that means we will show interest, due to that we 
will get good reputation.

      So think once select either of one , show your 
efforts, I am sure that you will get success. Basically i 
did BCA, after that i Did MCA. Now i settled as Software 
Engineer.Basically iam commerce student(CEC) but i have so 
much interest on computers so that i did BCA and then MCA. 
Now i got success in my life.

      As a person we can give suggestions, select the right 
decision, because you are the decision maker for your own 
life.

i am bca student 

please guide me in time management of study and my aim will
be Big IT engineer so planing is study time management.

please help me

Mr. YOGI PATEL

Do Mtech(IIIT).

if you are able to remeber lots of information do java
otherwise do dot net (or) php

if you are able to remeber lots of information do java
otherwise do dot net (or) php

in my opinion firstly you concentrate your basic study  
imean that you learn your progamming languages like "c"  if 
you have depth knowedge than you got success in yur life 
after c you learn your other progaamming languages in depth 
like c++ aspnet and java. because in this time many 
software companies offered to the fresher student

Inheritance is  a concept which involves the concept of re
usability Ex:Bank Accounts-->SB Account,RD Account,CD Account
       Polymorphism concept of one existing in many forms  
   Ex:In Graphical User interfaces,AWT

inheritance is hierarchy of class,that is one class derived
from another class

example:
grant father
     --father
           --son

polymorphism is the ability to take more than one form

example:
compile time polymorphism
 --method overloading
  people can act many role in the world
      home:father
      company:employee
 run time polymorphism
  --method overriding
    dog is a class
It contains smile method

Polymorphism applies to Overriding
Inheritance applies to Reusability of code defined earlier in one Class and later on used by Other Classes..

Human being life is the best example for ploymorphism bcoz
Let one take example
im a son of my parents and also brother of my sister and 
the employee of one company ...
Im playing the many role here.
Same example for inheritance also bcoz i have inherited my 
father property.

polymorphism: Polymorphism one form existing many forms is
called polymorphism.its used for over ridding.

EX:Man 
Because A Man go to office he is an Employee.
A Man go to movie he is an auditor.
A man walk with his lover she's boy friend 



inheritance is hierarchy of class,that is one class derived
from another class

EX:

grant father
     --father
           --son

abstract class Person
{
     public String sname(){}
     Address ad;
}
class Patient extends Person
{

}
class Employee extends Person
{
}
Here in the above example Person is a class acting two ways 
one Patient details info and Employee details. We are 
achieving this extends Person i.e inheritence.Inheritence 
provides code reusability,extensibility

cookie is small amount of data and it's store on the client
machine that is your browser machine

..Developer to create cookie and set the life time of cookie
on our web application
example

cookie.setMaxAge(1000);

the cookie available in 1000ms

cookie is a"small amount of data" that is set by the server
on the client.

we have setmaxAge() for destroy cookie.

1.cookie.setMaxAge(100)-->100 sec
     If we set the max age of a cookie to 100 sec,the browser 
holds the cookie for 100 sec even if we close the browser.

2.If we set max age value to negative value the browser hold
the cookie till we close the browser.

3.If we use setMaxAge(0) the browser will arase the cookie.

when we disable the cookies inside the client browser or if
the cookie age is finished which is set as
cookie.setMaxAge(mins*secs);

when we disable the cookies inside the client browser or if
the cookie age is finished which is set as
cookie.setMaxAge(mins*secs);

Forward():By using forward() method of RequestDispatcher ,ew
can forward a request to a another resource(i.e
servlets,jsp,html....),at finally we can see only called
resource output(i.e second resource output )
For exm. we have two servlets,(servlet1 and servlet2) we are
forwarding request from servlet1 to servlet2, in this case
we can see only servlet2 output.
include():By using include() method of RequestDispatcher we
can forward a request from servlet12 to servlet2 ,in this
case we can see  both outputs(i.e servlet1 and servlet2).

in both case single request and single response.

forward() is used to just forward the request and response
object...

include() is used to pass the values and request and
response object,one servlet to another servlet

Forward():

In ServletRequestDispatcher ,By using forward() method,we 
can forward a request to a another resource(i.e
servlets,jsp,html....),at finally we can see only called
resource output(i.e second resource output,i.e response)
For exm. we have two servlets,(servlet1 and servlet2) we are
forwarding request from servlet1 to servlet2, in this case
we can see only servlet2 output(i.e response for the 
request).
in forward()it will take only servlet1 output.
(ex: in servlet we a\are having some name like srinu with 
background color blue, it will take only the name not the 
color)

include():

By using include() method of RequestDispatcher we
can forward a request from servlet1 to servlet2 ,in this
case we can see  both outputs(i.e servlet1 and servlet2).

in include()it will include the servlet1 page and 
forwarding to the servlet2)
in this  case we can see both servlet1& servlet2 as the 
part of response.

forward will make the flow into a different page,where as
include mechanism will include the page to the current
response and continues the flow.
Note:the forward and include should be called before the
response is committed for example before the call to flush()
or flushBuffer() or the write method in the response stream

forward will make the flow into a different page,where as
include mechanism will include the page to the current
response and continues the flow.
Note:the forward and include should be called before the
response is committed for example before the call to flush()
or flushBuffer() or the write method in the response stream