WHAT IS SERVLET???

-
In this modern era of the internet, billion bytes of data is generated on a day-to-day basis. To gain access to this humongous amount of data, every person is required to send a request on the network and await a response. Most of us believe in the misconception that all of these web applications are created over web frameworks like HTML, PHP, JavaScript etc. But, did you know, web applications can be based on Java using a service called Java Servlets? In this article, let’s delve deep into Java Servlets and understand how this technology is useful for creating a web application.

Introduction to Web

Web is basically a system of Internet servers that supports formatted documents. The documents are formatted using a markup language called HTML (HyperText Markup Language) that supports links to other documents, like graphics, audio, and video files.

HTTP (Hypertext Transfer Protocol)

  • HTTP is a protocol that clients and servers on the web to communicate.
  • It is similar to other internet protocols such as SMTP (Simple Mail Transfer Protocol) and FTP (File Transfer Protocol.
  • HTTP is a stateless protocol i.e it supports only one request per connection. This means that with HTTP the clients connect to the server to send one request and then disconnect. This mechanism allows more users to connect to a given server over a period of time.
  • The client sends an HTTP request and the server answers with an HTML page to the client, using HTTP.
The HTTP request can be made using a variety of methods, but the ones which we use widely are  Get and Post. The method name itself tells the server the kind of request that is being made, and how the rest of the message will be formatted.
Now, with the help of the below table, let’s understand the difference between Get and Post methods of HTTP.
GetPost
1.  Data is sent in the header body1.  Data is sent in the request body
2.  Restricted to limited data transfer2.  Supports a large amount of data transfer
3.  It is not secured3.  It is completely secured
4.  It can be bookmarked4. It cannot be bookmarked
Now, that you have learned a few basics of web, let’s jump to the core topic and understand the concept of a servlet


A servlet is a Java Programming language class that is used to extend the capabilities of servers that host applications accessed by means of a request-response programming model. Although servlets can respond to any type of request, they are commonly used to extend the applications hosted by web servers. It is also a web component that is deployed on the server to create a dynamic web page.



 




.

Comments

Post a Comment

Popular posts from this blog

MACHINE LEARNING IN REAL WORLD

-
Image
Machine Learning along with AI is used in many real world applications categorized as follows 1.Self Driving Cars 2.Health Industries 3.Snap chat Application 4.Facial Recognition 5.Crime Investigations 6.Web Series 7.Robotics 8.Speech Recognition 9.Self automated machines like Atms 10.Traffic Detection & Weather forecasting Self Driving cars: The applications that run the infotainment system of a car can receive the information from sensor data fusion systems and for example, have the capability to direct the car to a hospital if it notices that something is not right with the driver. This application based on machine learning also includes the driver’s speech and gesture recognition and language translation. The algorithms are classified as an unsupervised and supervised algorithms. Health Industries: ML is used by Doctors in hospitals in diagnosing the images that are taken in XRAYS, ULTRASOUNDSCAN images and MRI images helpful for diagnosing the disease. ...
Read more

MACHINE LEARNING INTRODUCTION

-
Image
What is Deep Learning? In this blog, I will be talking on What is  Deep Learning  which is a hot buzz nowadays and has firmly put down its roots in a vast multitude of industries that are investing in fields like Artificial Intelligence, Big Data and Analytics. For example, Google is using deep learning in its voice and image recognition algorithms whereas Netflix and Amazon are using it to understand the behavior of their customer. In fact, you won’t believe it, but researchers at MIT are trying to predict future using deep learning. Now, imagine how much potential deep learning has in revolutionizing the world and how the companies will look for the certified professionals in Deep Learning . Before talking about deep learning, one must understand its relationship with Machine Learning and Artificial Intelligence. The easiest way to understand this relationship is by going through the diagram below: fig: What is Deep Learning – AI Technologies Timeline He...
Read more

Java Beans Program

-
Index.jsp <html>     <head>         <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">         <title>JSP Page</title>     </head>     <body>               <form action="process.jsp">            <input type="text" name="uname" value="name" onclick="this.value="/><br/>             <input type="text" name="uemail" value="emailid" onclick="this.value="/><br/>            <input type="password" name="upass" value="password" onclick="this.value="/><br/>             <input type="Submit...
Read more