1. The document discusses various aspects of server-side programming including servlets and JSP. It defines what a server and servlet are, and explains the servlet lifecycle.
2. It then introduces JSP as an extension of servlets that simplifies dynamic web development. Key features of JSP like scriptlets, directives, and tags are described.
3. The document concludes by discussing how JSP pages are translated into servlets at runtime and processed to generate responses for client requests.
Basics, Components, Design and Development of Web Application and Websites. Especially made for seminars and guest sessions for newbies in Web Development field.
STAENZ Academy
https://staenz.com/academy
Servlet architecture comes under a java programming language used to create dynamic web applications. Mainly servlets are used to develop server-side applications. Servlets are very robust and scalable. Before introducing servlets, CGI (common gateway interface) was used.
Basics, Components, Design and Development of Web Application and Websites. Especially made for seminars and guest sessions for newbies in Web Development field.
STAENZ Academy
https://staenz.com/academy
Servlet architecture comes under a java programming language used to create dynamic web applications. Mainly servlets are used to develop server-side applications. Servlets are very robust and scalable. Before introducing servlets, CGI (common gateway interface) was used.
Web Visualization with HTML5, CSS3, and JavaScript is the course with the rapidly changing web
development technologies, it has become important to stay in line with them to progress within the industry,
which is why this course in web virtualization has been brought to you to spruce up your web designing and
animating skills using HTML5, CSS3 and JavaScript. The latest features of HTML5, CSS3 and JavaScript is set
to be provided to you through this course, hence, it is desired that you have basic knowledge on these
programming languages for a smoother learning experience.
This course will start off by walking you through the CSS3 virtualization techniques to design and
animate webs. You will be taught how to create a 3D element using CSS transition and to transform animates
into 2D and 3D, along with an insight into the elements of scalable vector graphics which is needed to create basic
images and polygons and to animate.
Our tutors will further take you through the canvas aspects of HTML5 to start drawing grids and
animations using it. You will also get to learn how to create a callback and create and activate a queue that is
needed in animating and the animation libraries that will be essential to your web designing projects. By the end
of this course, you will have an outstanding knowledge of web visualization using HTML5, CSS3 and
JavaScript to secure yourself a prominent place within the web development industry.
Introduction, Technologies included in ajax,
Ajax Evolution,
Pro’s and Con’s,
Beginners Problem?,
Types and choices of request,
Ajax on hands (Example),
Global Ajax Event Handlers,
Helper Functions,
Low Level interface,
Shorthand Methods for Ajax request.
JSP technology has facilitated the segregation of the work of a Web designer and a Web developer.
A Web designer can design and formulate the layout for the Web page by using HTML.
On the other hand, a Web developer working independently can use java code and other JSP specific tags to code the business logic.
The simultaneous construction of the static and dynamic content facilitates development of quality applications with increased productivity.
This Presentation is useful to make PPT on the topic "Servlet and Servlet Life Cycle" in Advanced Java. This Presentation is also useful to study this topic.
Web Visualization with HTML5, CSS3, and JavaScript is the course with the rapidly changing web
development technologies, it has become important to stay in line with them to progress within the industry,
which is why this course in web virtualization has been brought to you to spruce up your web designing and
animating skills using HTML5, CSS3 and JavaScript. The latest features of HTML5, CSS3 and JavaScript is set
to be provided to you through this course, hence, it is desired that you have basic knowledge on these
programming languages for a smoother learning experience.
This course will start off by walking you through the CSS3 virtualization techniques to design and
animate webs. You will be taught how to create a 3D element using CSS transition and to transform animates
into 2D and 3D, along with an insight into the elements of scalable vector graphics which is needed to create basic
images and polygons and to animate.
Our tutors will further take you through the canvas aspects of HTML5 to start drawing grids and
animations using it. You will also get to learn how to create a callback and create and activate a queue that is
needed in animating and the animation libraries that will be essential to your web designing projects. By the end
of this course, you will have an outstanding knowledge of web visualization using HTML5, CSS3 and
JavaScript to secure yourself a prominent place within the web development industry.
Introduction, Technologies included in ajax,
Ajax Evolution,
Pro’s and Con’s,
Beginners Problem?,
Types and choices of request,
Ajax on hands (Example),
Global Ajax Event Handlers,
Helper Functions,
Low Level interface,
Shorthand Methods for Ajax request.
JSP technology has facilitated the segregation of the work of a Web designer and a Web developer.
A Web designer can design and formulate the layout for the Web page by using HTML.
On the other hand, a Web developer working independently can use java code and other JSP specific tags to code the business logic.
The simultaneous construction of the static and dynamic content facilitates development of quality applications with increased productivity.
This Presentation is useful to make PPT on the topic "Servlet and Servlet Life Cycle" in Advanced Java. This Presentation is also useful to study this topic.
Introduction to Node.js: perspectives from a Drupal devmcantelon
I gave a talk on November 25, 2010, on Node.js, and related technologies, to the Vancouver Drupal Users Group. The talk ran through why node.js is useful for realtime web apps, how to get it and Express up and running, and how to access data from Drupal and MongoDB.
Node.js and How JavaScript is Changing Server Programming Tom Croucher
Node.js is a highly concurrent JavaScript server written on top of the V8 JavaScript runtime. This is awesome for a number of reasons. Firstly Node.js has re-architected some of the core module of V8 to create a server implementation that is non-blocking (similar to other event driven frameworks like Ruby’s Event Machine or Python’s Twisted). Event driven architectures are a natural fit for JavaScript developers because it’s already how the browser works. By using an event driven framework Node is not only intuitive to use but also highly scalable. Tests have shown Node instances running tens of thousands of simultaneous users.
This session will explore the architectural basics of Node.js and how it’s different from blocking server implementations such as PHP, Rail or Java Servlets. We’ll explore some basic examples of creating a simple server, dealing with HTTP requests, etc.
The bigger question is once we have this awesome programming environment, what do we do with it? Node already has a really vibrant collection of modules which provide a range of functionality. Demystifying what’s available is pretty important to actually getting stuff done with Node. Since Node itself is very low level, lot’s of things people expect in web servers aren’t automatically there (for example, request routing). In order to help ease people into using Node this session will look at a range of the best modules for Node.js.
Relational databases vs Non-relational databasesJames Serra
There is a lot of confusion about the place and purpose of the many recent non-relational database solutions ("NoSQL databases") compared to the relational database solutions that have been around for so many years. In this presentation I will first clarify what exactly these database solutions are, compare them, and discuss the best use cases for each. I'll discuss topics involving OLTP, scaling, data warehousing, polyglot persistence, and the CAP theorem. We will even touch on a new type of database solution called NewSQL. If you are building a new solution it is important to understand all your options so you take the right path to success.
A look at where the market of the Internet of Things is and how technologies like Node.js (JavaScript) and the Intel Edison are making it easier to create connected solutions.
Learn more at https://losant.com.
The major topics include:
* What is the Internet of Things
* Where is IoT Today
* 4 Parts of IoT (Collect, Communicate, Analyze, Act)
* Why JavaScript is Good for IoT
* How Node.js is Making a Dent in the Internet of Things
* What npm Modules are used for Hardware (Johnny-Five, Cylon.js, MRAA)
* What is the Intel Edison
* How to Best Work with the Edison
* Tips for Edison (MRAA, Grove Kit, UPM)
* Where the World of JavaScript and IoT is Going
This is a step by step slides to study servlet, all the concepts which are required for a servlet are present in this ppt. The whole Servlet is divided into SESSIONS.
Web Component Development Using Servlet & JSP Technologies (EE6) - Chapter 1...WebStackAcademy
Servlet Technology is used to create web applications. Servlet technology uses Java language to create web applications.
As Servlet Technology uses Java, web applications made using Servlet are Secured, Scalable and Robust.
Web applications are helper applications that resides at web server and build dynamic web pages. A dynamic page could be anything like a page that randomly chooses picture to display or even a page that displays the current time.
Safalta Digital marketing institute in Noida, provide complete applications that encompass a huge range of virtual advertising and marketing additives, which includes search engine optimization, virtual communication advertising, pay-per-click on marketing, content material advertising, internet analytics, and greater. These university courses are designed for students who possess a comprehensive understanding of virtual marketing strategies and attributes.Safalta Digital Marketing Institute in Noida is a first choice for young individuals or students who are looking to start their careers in the field of digital advertising. The institute gives specialized courses designed and certification.
for beginners, providing thorough training in areas such as SEO, digital communication marketing, and PPC training in Noida. After finishing the program, students receive the certifications recognised by top different universitie, setting a strong foundation for a successful career in digital marketing.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar Kanvaria
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
A review of the growth of the Israel Genealogy Research Association Database Collection for the last 12 months. Our collection is now passed the 3 million mark and still growing. See which archives have contributed the most. See the different types of records we have, and which years have had records added. You can also see what we have for the future.
Normal Labour/ Stages of Labour/ Mechanism of LabourWasim Ak
Normal labor is also termed spontaneous labor, defined as the natural physiological process through which the fetus, placenta, and membranes are expelled from the uterus through the birth canal at term (37 to 42 weeks
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
2. 1. In IT term a Server is a computer program that provides services to other
computer programs(or Users ) in the same or other computers.
2. The computer in which server program runs is frequently referred as
Server(though it may be used for other purposes as well).
3. In a client server programming model a server is a program that awaits
and fulfills requests from client programs in the same or other computers.
A given application in a computer may function as a client which requests
for services from other programs.
4. Specific to the web, a web server is a computer program(housed in a
computer) that serves requested HTML pages or files. A web client is the
requesting program associated with the user. The web browser in your
computer is a client that requests HTML files from Web server.
What is Server
3. A web site is a collection of web pages which are stored on a web server and
can be accessed from any where using a web browser. The purpose of a web
site is to share information over the network.
Web sites can be of two types:
Static web sites
Dynamic web sites
In a static web site, the information which is presented to the end user,
remain available on the server usually in the form of HTML pages. When a user
sends a request to a page, contents of the page are sent by the server as
response.
In a dynamic web site, server has programs which are executed when
a request is submitted by clients, these programs process requests and
generate HTML contents which are sent by the server as response to the
client.
What is static and Dynamic Web
Site
4. 1. Client side programming generally refers to the class of programs on the
web that are executed client side by the user’s web browser OR by client
side we refer to code that is executed directly on the device that the user is
using.
2. Upon request, the necessary files are sent to the user’s computer by the web
server (or server) on which they reside.
3. The user’s web browser executes the script and then displays the
document.
4. Client side programming language example include javascript.
disadvantage:
By viewing the file that contains the script users may be able to see the
source code.
What is Client side Side
Programming
5. 1. Server side programming generally refers to the class of programs that are
written to be executed on the Server.
2. A request is generated to execute some program stored on the server.
3. Server in turn serves the request i,e, executes the requested code piece on
server and returns response.
4. Some of the languages used for building Server side application are:
Java, Php, Python, Ruby, etc.
Advantage over Client Side Programming:
The User cannot see the source code and may not be even aware that
a script is executed.
What is Server Side
Programming
6. 1. In early days of the web, server side programming was almost exclusively
performed by using combination of C programs, Perl scripts and Shell
scripts using the common gateway interface(CGI).
2. CGI is a protocol which provides standard rules for server to invoke
programs, to provide requested data to them and to receive the processed
result from them.
Drawbacks of CGI based web applications:
.For each request a process is started by the server to execute CGI script, Process creation and destruction
results in extra overhead than actual processing time.
If number of requests increase, it takes more time for sending response
CGI scripts were platform dependent i,e, if the web application is to be deployed from windows to Linux
server or vice versa CGI script need to be recompiled for the target platform.
History of Server side
Programming
7.
To remove the drawbacks of CGI protocol, Sun microsystem in
1988 introduced the Servlet API.
1. To remove the overhead of process creation and destruction, a
thread based request processing model is provided by servlet.
2. By facilitating the development of web based application in
java, problem of platform dependency is removed
Introduction of Servlets
8. Servlet term is used with two different meanings in two different contexts,
1. In the broader context it represents an API which facilitates development of
dynamic web applications
2. In the narrow context it represents a java class which is defined using this
API for processing requests in a web application.
This component is responsible for processing requests in web
application.
javax.servlet.Servlet is the main interface of the API, it provides
methods which define initialization, processing and destruction phase of a
Servlet. These methods are called servlet life cycle methods.
What is Servlet
9. Various life cycle methods of servlet are discussed below:
1. init(): This method defines Initialization. This method is invoked only once
just afte servlet object is created.
public void init(ServletConfig config);
2. Service(): This method is invoked by the server each time a request is
received for the servlet.It is used by the servlet for processing requests.
public void service(ServletRequest request, ServletResponse
response)throws ServletException, IOException.
3. Destroy():This method is invoked by the server only once just after the
servlet in unloaded. It can be used by the application programmer for
defining cleanup operations.
public void destroy();
Life cycle methods of a Servlet
10. A servlet program can be created by three ways:
i. By implementing a servlet interface.
ii. By inheriting GenericServlet class.
iii. By inheriting HttpServlet class.
Server side Program to check whether a number is Prime or not?
Presentation logic:
<form action=“primeServlet” method=“post”>
<center> Enter Number<Input type=“Text” name=“num”>
<Input type=“submit” value=“check”></center>
</form>
Skeleton of a Servlet program
11.
Business logic: PrimeServlet.java
import javax.Servlet.*;
import javax.Servlet.http.*;
import java.io.*;
class PrimeServlet extends HttpServlet{
public void doPost(HttpServletRequest request, HttpServletResponse
response)throws ServletException IOException
{ response.setContentType(“text/html”) ;
PrintWriter out=response.getWriter();
//request data is read
int p=Integer.parseInt(request.getParameter);
//Business logic is defined
int d=2;
while(num%d!=0)
d++;
if(num==d)
Out.println(“number is prime”);
else
out.println(“number is not prime”);
out.close
}
}
12.
Deployment Descriptor(Web.xml): A web application’s deployment
descriptor describes the classes, resources and configuration of the application
and how the web server uses them to serve web requests. When the web server
receives a request for the application, it uses deployment descriptor to map the
URL of the request to code that ought to handle the request. The deployment
descriptor is a file named web.xml.
Web.xml for our program is as
<web-app>
<servlet>
<servlet-name>s1</servlet-name>
<servlet-class>com.Servlet.myPack.PrimeServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>s1</servlet-name>
<url-pattern>/primeServlet</url-pattern>
</servlet-mapping>
</web-app>
13. 1. Designing in Servlet is difficult and slows down the
application.
2. Writing complex business logic makes the application difficult
to understand.
3. You need a java runtime environment on the server to run
servlet.
4. Developing web application in servlet is unproductive i,e, a
lot of code need to be written even for simple tasks.
Drawbacks of Servlet
14. JSP(Java Server Page) is the extension of servlet which facilitates productive
development of dynamic web application in java.
JSP simplifies the development of dynamic web by facilitating the
embedding of request processing logic into the HTML itself with the help of
special tags.
Each JSP page is automatically translated into servlet by the server at
runtime.
Using JSP we can collect input from users, through web page forms, present
records from a database or another source and create web page
dynamically.
JSP tags can be used for variety of purposes such as retrieving information
from a database or registering user preferences, accessing javabeans
components, passing control between pages and sharing information
between requests, pages etc.
Introduction of JSP
15. 1. JSP increases the productivity of the application programmers
as they are only required to provide the processing logic. All
the repetitive tasks such as defining classes & request
processing methods, and writing static HTML contents to the
output stream, are automated.
2. Maintenance is simplified. Static HTML contents or request
processing logic can be changed on the fly because of the
automated translation.
Advantages of JSP over Servlet
16. Performance is significantly better because JSP allows embedding Dynamic
Elements in HTML Pages itself instead of having a separate CGI files.
JSP are always compiled before it's processed by the server unlike CGI/Perl
which requires the server to load an interpreter and the target script each
time the page is requested.
Java Server Pages are built on top of the Java Servlets API, so like Servlets,
JSP also has access to all the powerful Enterprise Java APIs, including JDBC,
JNDI, EJB, JAXP etc.
JSP pages can be used in combination with servlets that handle the business
logic, the model supported by Java servlet template engines.
Why Jsp?
18. 1. Client first sends request for a JSP page
2. Using a Jsp page a servlet is generated by server component. This servlet
contains the request processing logic of the JSP and auto generated
statement to write the static HTML content to the output stream.
3. The translated servlet is compiled.
4. An object of the generated servlet class is created and initialized.
5. Request processing method _jspService(request,response)is invoked on the
servlet object.
6. Contents dynamically generated by _jspService(request,response)method
are sent as response to the client.
Working of JSP
19. Jsp life cycle is defined by JspPage and HttpJspPage interfaces
Javax.servlet.jsp package contains classes and interfaces of JSP API.
Main classes and interfaces of JSP API are:
1. JspPage:It extends Servlet interface and adds following JSP life cycle
methods:
jspInit():This method is provided to define initialization operations of
JSP. Syntax:
public void jspInit();
jspDestroy(): This method is provided to define clean up operations
of the jsp. Syntax:
public void JspDestroy();
2. HttpJspPage: It extends Jsp page interface and provides following life
cycle method:
JSP Life Cycle
20.
3. _jspService(): This method is provided to define request
processing logic of the JSP. Syntax
public void _jspService(HttpServleRequest request,
HttpServletResponse response )throws ServletException,
IOException;
21. Jsp supports following types of tags:
1. Scriptlet.
2. Declaration.
3. Expression.
4. Directives.
5. Actions
Tags supported by Jsp
22.
1. Scriptlet is the main tag of JSP. It is used to add request processing logic to
a JSP page. A JSP page may contain any number of scriptlet tags.Syntax
<%requestprocessing logic%>
At the time of translation scriptlet contents are used by the server for defining
body of _JspService method.
Within Scriptlet following implicit objects are made available to a Jsp
programmer.
Out JspWriter.
Request HttpServletRequest object which contains
request parameters and attributes
Response Is HttpServletResponse object.
Config Is ServletConfig object of the servlet.
Session Is HttpSession object of the user.
Application Is the ServletContext object of the application
Page is the current servlet object of the jsp.
pageContext Is an object of type PageContext. It acts as a container of a
all the other servlet and JSP API objects which participate
request processing.
Exception is an optional object which is available only when exc. ocr
23.
An Example demonstrating use of Scriptlet tag:
<form method="post" action="adder.jsp">
First No: <input type="text" name="num1"><br/>
Second No: <input type="text" name="num2"><br/>
<input type="submit" value="add"> </form>
<% int a=Integer.parseInt(request.getParameter("num1"));
int b=Integer.parseInt(request.getParameter("num2"));
int c=a+b;
out.println("sum is: "+c); %>
with this example we have understood the simplication provided, Here
no class or method is defined, no object is declared, no content type is set, no
web.xml file is required
24.
2. Declaration tag in Jsp facilitate data members and method definition in the
auto generated servlet.. Main use of this tag is the overriding of jspInit() and
jspDestroy() methods.
<%! Data members and method definition%>
An example demonstrating the use of Declaration tag
<form method="post" action="hello.jsp">
Name <input type="text" name="name"><br/>
<input type="submit" value="submit">
</form>
<%!
private String userName;
Public String sayHello(){
Return “Hello”+userName;
}
Public void jspInit()
{
System.out.println(“hello.jsp is initialized”);
}
%>
25.
3. Expression tag in jsp has two uses:
1. It is used to write the value of an expression to the output
stream.
2. It is used to assign the value of variables and expression to the
attributes of HTML elements.
syntax: <%=variable or expression%>
4. Action Tags in Jsp facilitate automation of common operations
such as creation of objects, setting object’s properties, writing
object’s property values to the output stream, including the
contents of a component to the reponse of current request and
forwarding request to another component etc. An action tag has
following syntax:
<jsp:actionName attribute=value…/>
26.
Action Tags in Jsp facilitates automation of common operations such as
creation of objects, setting object’s properties, writing object properties, writing
objects’s property value to the output stream, including contents of a
component to the response of current request and forwarding request to
another component etc.
Commonly used action tags of Jsp:
<jsp:include />: used to include the contents of specified page to the response
of current request.
<jsp:forward />: used to forward request to the specified page.
<jsp:useBean/>: used to create a Bean Object and save it in a scope.
<jsp:setProperty/>: used to set property of java Bean object.
<jsp:getProperty/>:used to write the value of java Bean object to the output
stream.
<jsp:param/>: it is used to define parameters to be provided to the included or
forwarded page.
27. A directive in JSP, represents an instruction to the translator to modify the
structure of the auto generated servlet at the time of translation on behalf of the
programmer. As we know for each JSP, a servlet class is autogenerate.
Sometimes modifications are required in this servlet e,g. Some extra packages
need to be imported in it or it need to be inherited from a use defined class, or
exception need to be managed in some specific way.Syntax:
%@directiveName attribute=“value..”%
Information to the translator is provided with the help of attributes.
JSP suports following three directives:
Page
Include and
taglib
Directives
28.
Include directive in JSP, is used by application programmers to
get the contents of a page included to the current JSP at the
time of translation.
<%@include file=“url of the component to be included ”%>
JSP page directive is used by the programmer to get the
structure of the auto generated servlet modified according to
their requirements.
<%@page attributeName=“value”%>
commonly used attributes:
import <%@page import=“packageName”%>
Extends <%page extends=“className”%>
ContentType<%@page contentType=“MIMEType”%>
Session <%@page session=“false”%>
isErrorPage<%@page isErrorPage=“true”%>
errorPage<%page errorPage=“URL of errorHandlerPage”%>