Home Tutorialhelp Comment Life cycle of servlet

 
 

Comment

vasanthi
Life cycle of servlet,
January 6, 2010 at 7:54 PM

The life cycle of a servlet can be categorized into four parts:

Loading and Inatantiation: The servlet container loads the servlet during startup or when the first request is made. The loading of the servlet depends on the attribute <load-on-startup> of web.xml file. If the attribute <load-on-startup> has a positive value then the servlet is load with loading of the container otherwise it load when the first request comes for service. After loading of the servlet, the container creates the instances of the servlet.
Initialization: After creating the instances, the servlet container calls the init() method and passes the servlet initialization parameters to the init() method. The init() must be called by the servlet container before the servlet can service any request. The initialization parameters persist untill the servlet is destroyed. The init() method is called only once throughout the life cycle of the servlet.

The servlet will be available for service if it is loaded successfully otherwise the servlet container unloads the servlet.
Servicing the Request: After successfully completing the initialization process, the servlet will be available for service. Servlet creates seperate threads for each request. The sevlet container calls the service() method for servicing any request. The service() method determines the kind of request and calls the appropriate method (doGet() or doPost()) for handling the request and sends response to the client using the methods of the response object.
Destroying the Servlet: If the servlet is no longer needed for servicing any request, the servlet container calls the destroy() method . Like the init() method this method is also called only once throughout the life cycle of the servlet. Calling the destroy() method indicates to the servlet container not to sent the any request for service and the servlet releases all the resources associated with it. Java Virtual Machine claims for the memory associated with the resources for garbage collection.

View All Comments | View Tutorial
Advertisement
Related Tutorial and Articles
Servlets

Life cycle of Servlet
Life cycle of Servlet       This article is discussing about the Life cycle of Servlet and teaches you the Servlet Life cycle methods. As a beginner you should understand 

Servlet Interview Questions

Servlet Life Cycle
Servlet Life Cycle  Servlet Life Cycle 

Java Interview Questions

servlet life cycle
servlet life cycle  What is the life cycle of a servlet 

Servlets

Servlet Life Cycle
The Life Cycle of Servlet having some good characterstics that allows servlet... pertains of low-level Server API progamming. The life cycle of a servlet is operated by the container in which the servlet has been deployed. Servlet life cycle 

JSP Interview Questions

Jsp life cycle.
Jsp life cycle.  What is JSP life cycle?   Life cycle.... This method is called only one time during JSP life cycle. 6.Call... the corresponding servlet is created. 2.Page Compilation ?The java file is compiled 

Servlet Interview Questions

servlets
can you explain servlet life cycle  can you explain servlet life cycle   The life cycle of a servlet can be categorized into four parts... the following link: Servlet Life Cycle 

JSP Tutorials

Life Cycle of a Jsp Page
as the servlet life cycle. After get translated the jsp file is just like a servlet. The life cycle of the jsp page is given below: jspInit(): This method...Life Cycle of a Jsp Page      

JSP Servlet Questions

servlets
life cycle...servlets  q)What will happen if you donā??t write the implementation in service () of our Servlet? Which method () it will call? q2)How many times 

Servlet Interview Questions

servlets
, in the order they appear in web.xml file. A filter also has life cycle...; Filters are powerful tools in servlet environment. Filters add certain functionality to the servlets apart from processing request and response paradigm 

JSP-Tutorials

JSP Life Cycle
. In the core of the JSP, Java Servlet technology is executed therefore, JSP life cycle... to Servlet life cycle are described as follows : Translation of JSP page...JSP Life Cycle In this section we will discuss about life cycle of JSP. Like 

JSP-Tutorials

JSP Page Architecture and its life cycle
and it's life cycle. In short, Java Server Pages(JSP) is a high level extension...' package that contains the life cycle methods of complied JSP Page. jspInit... response) are the life cycle methods of the compiled JSP page. Diagram of JSP 

Servlets

Learn Servlet Life Cycle
Learn Servlet Life Cycle Servlet is a Java programming language class... of Servlet Life Cycle in which servlet container loads the servlet from web.xml... called only once in the entire life cycle of the servlet. Once the destroy 

JSP Servlet Questions

write a program in java to demonstrate the complete life cycle of servlet:
write a program in java to demonstrate the complete life cycle of servlet:  l have an assignment question. i don't know how to write the code... life cycle of a Servlet 

Java Beginners

Coding for life cycle in threads
Coding for life cycle in threads  program for life cycle in threads 

Flex Questions

Flex Component Life Cycle
Flex Component Life Cycle  hi.... please tell me about What is Flex Component Life Cycle? Thanks  Ans: There are following pase of flex component life cycle. 1. Initialization phase 2. Update phase 3 

Hibernate-Tutorials

Hibernate Life Cycle
This tutorial contains full description of Hibernate life cycle 

Spring Framework Questions

bean life cycle methods in spring?
bean life cycle methods in spring?  bean life cycle methods in spring 

Flex Questions

Life-Cycle of flex application
Life-Cycle of flex application  hi..... Please tell me What is LifeCycle of Flex-Application? please give me the answer ASAP. Thanks  LifeCycle of flex application: When we create a flex application in Adobe 

Servlet Interview Questions

servlets - Servlet Interview Questions
() method will call only once in the servlet lifecycle. as the name imply init() method initializes the servlet,probably it happens once in a servlet life cycle. after initiating the servlet only the doPost or doGet methods(relevant http 

RUP Questions

Five disciplines in the Iterative Life Cycle
Five disciplines in the Iterative Life Cycle  hello, What are the Five disciplines in the Iterative Life Cycle?   hii, These are the Five Disciplines in the Iterative Life Cycle:- Requirements Analysis and Design 

Java Testing

DbUnit test Life Cycle
DbUnit test Life Cycle       DbUnit framework follows some steps in its life cycle... of the life cycle are executed when executing the setUp() method before running 

Hibernate Questions

hibernate object states and life cycle
hibernate object states and life cycle  I am bit confused in between the hibernate states and it's life cycle. Can you please explain this also? also explain the persistent, detached and transient object states.Thanks 

Programming Tutorials

EJB life cycle method
EJB life cycle method      ... as the life cycle of EJB. Each type of enterprise bean has different life cycle... is the program denoting life cycle of message driven bean. package 

Java Server Faces - JSF

JSF Life Cycle
JSF Life Cycle In this section we will discuss about life cycle of JSF. This section will describe you JSF life cycle. Life cycle of JSF specifies... life cycle for every request and response. Request for the JSF page can 

Servlets-Tutorials

Servlet Tutorial
API, Servlet life cycle, versions of Servlet, Servlet Container Servers What... with the Servlet . The Servlet containermanages the Servlet's life cycle, maps the URL etc... as well as session management. Servlet life cycle Life cycle of Servlet 

Java Server Faces

JSF Life Cycle
JSF Life Cycle      In this we will understand the life cycle of JSF application.  Life... properties, the life cycle proceeds directly to the render response phase 

Java-Tutorials

Life Cycle of Threads
Life Cycle of A Thread   ... the life cycle of thread is very valuable. While a thread is alive, it is in one... start its life from Runnable state. A thread first enters runnable state after 

Blog

Life Cycle of Java Server Faces
follows is called life cycle. The article ?JSF Life Cycle? explains all the life cycle phases of JSF that is very useful for the developer who want to know... cycle of JSF. Read the full article at: JSF Life Cycle 

Programming Tutorials

Bean life cycle in spring
Bean life cycle in spring       This example gives you an idea on how to Initialize bean in the program and also explains the lifecycle of bean in spring. Run the given bean example 

Software Development

System Development Life Cycle
System Development Life Cycle   ... cycle of Software Development Life Cycle. The information systems... Development life cycle. Advantages of using the SDLC also include efficient work 

Management

Product Life Cycle Diagram
Product life cycle diagram is the graphical representation of four stages... life cycle also called PLC is a concept of marketing that tells about... stages in the Product life cycle diagram indicates: Introduction 

Core Java

Thread Life Cycle Example in java
Thread Life Cycle Example in java In this section we will read about the life cycle example of Thread in Java. Life cycle of Thread explains you the various... when its run() method execution is completed. The life cycle of Thread is ended 

EJB Tools

EJB life cycle method
EJB life cycle method      ... as the life cycle of EJB. Each type of enterprise bean has different life cycle... is the program denoting life cycle of message driven bean. package 

General

Stateful and Stateless Session Bean Life Cycle
Understanding Stateful and Stateless Session Bean Life Cycle... Bean Life cycle There are two stages in the Lifecycle of Stateless Session Bean... the bean into Does Not Exist state. Following Diagram shows the Life cycle 

Management

Product Life Cycle
Product life cycle is an important concept of marketing which shows the stages... of a product life cycle including introduction to growth, maturity and decline... and marketing mix accordingly. The four stages of a product life cycle 

Programming Tutorials

Spring Bean Life Cycle methods, Spring Bean Life Cycle
Spring Bean Life Cycle methods In this example you will know about spring bean life cycle and how a bean is initialized in the program. The bean factory container search for bean definition and also instantiates the bean 

Servlets

Servlet Interview Questions - Page 2
of Servlet? Answer: The interface javax.servlet.Servlet,  defines the three life... Controller Servlet. Question: What must be implemented by all Servlets? Answer: The Servlet Interface must be implemented by all servlets. Question: What 

Programming Tutorials

Chapter 4. Session Bean Life Cycle
Bean Life CycleIdentify correct and incorrect statements or examples about the life cycle of a stateful or stateless session bean instance... Chapter 4. Session Bean Life CyclePrev Part I.  

Programming Tutorials

Chapter 7. CMP Entity Bean Life Cycle
or examples about the life cycle of a CMP entity bean.... The following steps describe the life cycle of an entity bean... Chapter 7. CMP Entity Bean Life CyclePrev Part  

Servlet Interview Questions

servlets
interfaces and classes for writing servlets. The Servlet Interface The central abstraction in the Servlet API is the Servlet interface. All servlets implement...what is the architecture of a servlets package  what 

Flex Questions

Invalidation cycle
Invalidation cycle   Hi.... What is invalidation Cycle? What are its uses? please give me an example for that.... Thanks   Ans: Invalidation life-cycle: *Flex imposes deferred validation on the Flash API 

Servlet Interview Questions

servlets
servlets  How do you communicate between the servlets?   We can communicate between servlets by using RequestDespatcher interface and servlet chaining 

Development process Questions

Servlets
Servlets  Java Servlet technology  You have set the classpath? It seems that there may be something missing in servlet configuration. Anyways, please visit the following links: http://www.roseindia.net/servlets 

JSP Servlet Questions

servlets
servlets  How to open and read the contents of a text file in servlets?   Please visit the following link: Read text file using Servlet 

JSP Servlet Questions

servlets
servlets   Hi what is pre initialized servlets, how can we achives?   When servlet container is loaded, all the servlets defined... the request it loads the servlet. But in some cases if you want your servlet 

Servlets

Introduction to Java Servlets
; A Servlet?s Life Cycle The first time... the execution of the servlet life cycle methods, keep refreshing the browser (F5..., service and destroy also called as life cycle methods might be used which 

Management

System Development Life Cycle (SDLC)
Among all the models System Development Life Cycle (SDLC) Model is one... Life Cycle Model or Linear Sequential Model or Waterfall Method. This model... and other important documentations. This is the most important phase of the cycle 

Servlet Interview Questions

servlets
are the differ ways you can communicat between servlets   Different ways of communicating between servlets:- 1)Using RequestDispatcher object. 2... in the response of the servlet. 4)Calling public methods of the resource. 5 

Servlet Interview Questions

the servlets
what is diff between generic servlets and httpservlets  what is diff between generic servlets and httpservlets   Difference between... is an abstract class which extends Object and implements Servlet, ServletConfig 

Servlet Interview Questions

servlets
package supports the development of servlets that use the HTTP protocol. The classes in this package extend the basic servlet functionality to support various HTTP... javax.servlet.GenericServlet and serves as the base class for HTTP servlets. HttpServlet-Request 

Servlet Interview Questions

SERVLETS
SERVLETS  I have two Servlet Containers, I want to send a request from one Servlet from one container to one Servlet in the other container, How can I do 

JSP Servlet Questions

servlets
servlets  hi i am using servlets i have a problem in doing an application. in my application i have html form, in which i have to insert on date value, this date value is retrieved as a request parameter in my servlet 

Servlet Interview Questions

servlets
what are the two important api in for servlet  what are the two important api in for servlet   Two important packages are required to build servlet "javax.servlet" and javax.servlet.http 

Servlet Interview Questions

the servlets
what is the use of servlet context  what is the use of servlet... with the servlet container. There is only one ServletContext for the entire web... information about the environment. It represents a Servlet's view of the Web 

Servlet Interview Questions

servlets
; Please visit the following links: Logging Filter Servlet Example   Response Filter Servlet Example 

Java Beginners

servlets
servlets  how can I run java servlet thread safety program using... method=POST action=\?http://localhost:8080/examples/servlet/serv.threadsfty\?>...(IOException e) { System.out.println(?erroe?+e); } } }   Put servlet 

JSP Servlet Questions

servlets
servlets  hi i am doing one servlet program in which i strucked... the student details in a servlet and stores that into one resultset object 3)forward...; Please visit the following link: http://www.roseindia.net/jsp/servlet-jsp 

JSP Servlet Questions

servlets
as abstract) please give the answere   The servlet programmers typically don't want their servlet to support the main HTTP methods (POST, GET), so it would 

Servlet Interview Questions

the servlets
how do we define an application level scope for servlet  how do we define an application level scope for servlet   Application scope uses a single namespace, which means all your pages should be careful 

Servlet Interview Questions

servlets
/requestdispatcher.shtml http://www.roseindia.net/tutorial/java/servlet/httprequest 

Servlets

Servlet hello world example
life cycle has three method init(), service() and destroy() which must be implemented by every Servlet. While initialization of Servlet life cycle web... method of  Servlet life cycle. We should start understanding Servlet 

Development process Questions

Servlets
Servlets  when i deployed the following servlet program in tomcat i... javax.servlet.ServletException: Error instantiating servlet class InsertServlet...) java.lang.Thread.run(Unknown Source Here is the servlet code: import java.io. 

Development process Questions

Servlets
Servlets  when i am compiling the following servlet program... the solution for this problem.And how can we deploy the servlet in Tomcat  I have already told you can't run servlet on console. It is always run 

JSP Servlet Questions

Servlets
Servlets  servlet code to accept client details and store it in the database   Hi Friend, Try the following code: 1)insert.jsp: <...); } } } For more information, visit the following link: Servlet Tutorials 

Development process Questions

Servlets
{ ^ 6 errors   Do you have servlet-api.jar in your apache 

Java-Tutorials

The Life cycle of An Applet
The Life cycle of An Applet     ... of the applet. stop(): This method can be called multiple times in the life cycle of an Applet. destroy(): This method is called only once in the life cycle 

Servlets

Methods of Servlets
once by the servlet container throughout the life of a servlet. By this init... Methods of Servlets       A Generic servlet contains the following five methods: init() public void init 

EJB Tools

Bean life cycle in spring
Bean life cycle in spring       This example gives you an idea on how to Initialize bean in the program and also explains the lifecycle of bean in spring. Run the given bean example 

Spring Framework

Bean life cycle in spring
Bean life cycle in spring       This example gives you an idea on how to Initialize bean in the program and also explains the lifecycle of bean in spring. Run the given bean example 

Servlet Interview Questions

servlets - Servlet Interview Questions
what is servlets in Java  what is servlets in Java 

Servlet Interview Questions

servlets - Servlet Interview Questions
servlets  why servlets are component-based 

Servlets

Servlet Tutorials
Introduction to Web Server What is a Container Life Cycle of Servlet... Advantages of Java Servlets Advantages of Servlets over CGI Servlet 3.0...Servlet Tutorials Servlet is a Java programming language class, which provides 

JSP Servlet Questions

servlets - JSP-Servlet
servlets  i want to know the basic requirements to compile and run a servlet.. the software required and the procedure required to write a servlet.../servlets/HowToRunAServlet.shtml Thanks 

JSP Servlet Questions

Servlets - JSP-Servlet
Servlets  Hi,im d beginner to learn servlets and jsp.please can u... pass configuration information from server to a servlet during initialization. The ServletContext interface define methods that allow a servlet to interact 

JSP Servlet Questions

servlets - JSP-Servlet
send me e servlet for employee details.. based on that can u explain me where... servlets link . you can learn more information about servlets structure. To develop an application using servlet or jsp make the directory structure Read 

Servlet Interview Questions

servlets - Servlet Interview Questions
servlets  why servlets can call server-independent 

Servlet Interview Questions

servlets - Servlet Interview Questions
servlets  WHAT ARE THE SERVLETS SUPPORTING LANGUAGES? compare to CGI Script 

JSP Servlet Questions

servlets - JSP-Servlet
servlets  I want to write a simple program on servlet context attribute listener.  Hi Friend, Please visit the following link: http://www.roseindia.net/servlets/ServletContextAttributeListener.shtml Hope 

JSP Servlet Questions

servlets - JSP-Servlet
servlets  i want to write a simple program on servlet context listener.  Hi Friend, Please visit the following link: http://www.roseindia.net/servlets/ServletContextListener-example.shtml Hope 

JSP Servlet Questions

servlets execution - JSP-Servlet
servlets execution  the xml file is web.xml file in which the servlet name,servlet class,mapping etc which has to be done.   What u want...://www.roseindia.net/servlets/ Thanks. Amardeep 

JSP Servlet Questions

servlets execution - JSP-Servlet
servlets execution  hi friends, i wanted to know how to compile and run a servlet which has got an html file with it. this html file is seperately written and it is not embedded in it.i know how to execute a servlet with xml 

Servlet Interview Questions

servlets - Servlet Interview Questions
servlet and are unknown to other servlets. The ServletContext parameters...%20ServletConfig http://www.roseindia.net/servlets/use-log-servlet-context.shtml... is a interface which helps us to communicate with the servlet container. There is only one 

Servlet Interview Questions

servlets - Servlet Interview Questions
servlets  I want to create timetable in servlets.. i completed this servlet with the help of the html.. now i want to modify this br me or anyohter... how can i edit this timetable and after modifying how to store 

Servlet Interview Questions

servlets - Servlet Interview Questions
servlets  If i am requesting from 2 different clients(browsers) which are in 2 different machines to a single servlet(in third machine's web container). Does the servlets init() is called by the 2 clients or it will be called 

Servlet Interview Questions

servlets - Servlet Interview Questions
servlets  is there anybody to send me the pdf of servlets tutorial? Thanks in advance for who cares about me 

JSP Servlet Questions

java - JSP-Servlet
isErrorPage="true" errorPage="/page". Servlet life cycle having following... is done then servlet destroy() : that's the end of servlet. Jsp life cycle...java  Difference b/w Servlets and JSP  Hi friend, Main 

JSP Servlet Questions

Servlets with Extjs
Servlets with Extjs  how to integrate servlets and extjs and also show database records in extjs grid using servlet how to get servlets json response. Can any one please help me 

JSP Servlet Questions

servlets - JSP-Servlet
servlets  hi, can anybody help me as what exactly to be done to for compilation,execution of servlets. i also want to know the software required in this execution 

JSP Servlet Questions

servlets - JSP-Servlet
servlets  how to upload images in servlets  Hi friend, For solving the problem : http://www.roseindia.net/servlets/upload-image.shtml Thanks 

Servlet Interview Questions

servlets - Servlet Interview Questions
servlets  What would we do with a doGet() method?  Hi Read more Details http://www.roseindia.net/servlets 

JSP Servlet Questions

Servlets in JSF - JSP-Servlet
Servlets in JSF  Hi! I am using Java Visual Studio to develop my... in the form itself by double clicking why should i go for servlets to write code.... Simply what is the role of servlets in JSF. which one is the best one..jsp 

Servlet Interview Questions

servlets - Servlet Interview Questions
servlets  i am using servlets. in that servlet i have an option "logout" button. when ever i press this "logout" button the browser page is closed with options "yes/no". when ever press "yes" window is closed. when ever 

JSP Servlet Questions

servlets - JSP-Servlet
servlets  Hello, I am newbie to servlets. Today, i installed the j2ee sdk. How to compile and run a servlet? i dont wanna use apache or any other server. by defult glssfish eenterprise server was installed along with the j2ee 

Servlet Interview Questions

servlets - Servlet Interview Questions
servlets  Hi i want to create class timetable using servlets... this timetable using servlets with colspans and rowspans becuase this is my... of servlets.. becuase the end user did no html so this is done dynamically 

JSP Servlet Questions

servlets - JSP-Servlet
servlets.  Hi friend, employee form in servlets...;This is servlets code. package javacode; import java.io.*; import java.sql.... Servlet and JSP Examples. Servlet and JSP 

JSP Servlet Questions

servlets execution - JSP-Servlet
servlets execution  hello friend, thanks for the reply.. the link... in it. i want to know how to execute a servlet in which html is written... it helps you how to execute servlet programs. http://mann 

Java Server Faces Questions

servlets and struts
servlets and struts  wat is the diffrence between servlets and struts?   A Servlet is a technology and Struts is a framework which relies on or makes use of Servlets.A Servlet is a controller. Struts has its own Servlet 

JSP Servlet Questions

java - JSP-Servlet
handelling is easy in jsp isErrorPage="true" errorPage="/page". Servlet life cycle.... Jsp life cycle First .jsp is converted to .class in that is servlet...java  what is the difference between jsp and servlet?   Hi 

Servlet Interview Questions

servlets - Servlet Interview Questions
What is Server push in servlet?  What is a server push method in servlet?  Server push means that a server pushes content to the browser... = response.getWriter(); accesses++; out.print("Number of times this servlet 

JSP Servlet Questions

servlets and jsp - JSP-Servlet
servlets and jsp  HELLO GOOD MORNING, PROCEDURE:HOW TO RUN A SERVLET AND JSP IN COMMANDPROMPT AND ALSO IN NETBEANS IDE6.0,IT'S VERY URGENT FOR ME,IN ADVANCE THANK U VERY MUCH.   TO Run Servlets in Compand 

Advertisements Advertisements
 

 

 

DMCA.com