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What is Servlet
Servlets are Java classes that are used to implement web applications. They are compiled to bytecode that can run on a Java Virtual Machine (JVM), and they are specifically designed to handle requests and generate responses in a web environment.
A servlet receives a request from a client, processes it, and generates a response. It can be used to create dynamic web pages, handle form data, and manage sessions. Servlets are usually part of a larger application that is run on a web server, such as Apache Tomcat or Jetty.
To use servlets, you will need a web container (also known as a servlet container) that supports the Servlet API. The Servlet API is a set of Java classes and interfaces that define how a servlet should behave and interact with the web container and with clients.
There are several benefits to using servlets in web development: They are fast: Servlets are written in Java, which is a compiled language. This means that they are faster than interpreted languages, such as Python or Ruby, because the code is already compiled and ready to run.
They are flexible: Servlets can be used to generate dynamic content, handle form data, and manage sessions. This makes them suitable for a wide range of web applications.
They are portable: Servlets are designed to run on any web server that supports the Servlet API, so they can be easily deployed on different servers.
They are secure: Servlets can be used to implement security measures, such as authentication and authorization, to protect sensitive data.
Simple Servlet Program
click on your project
go to src
go to main
go to java
right click on java
Enter className first
select init,service,destroy methods