What is Servlet in Java

1. Overview

In this article, we will discuss what is Java servlet and its purpose. To learn more about Java, refer to this article.

2. Why need Servlet

The Servlet (Jakarta Servlet) is a server-side technology using which we can build web applications. It provides dynamic content using the request and response model.

Soon after the web began to be used for delivering services, the need for dynamic content emerges. Initially, Common Gateway Interface (CGI) server-side scripts were the main technology used to generate dynamic content. Although widely used, CGI scripting technology had many shortcomings, including platform dependence and lack of scalability.

To address these limitations, the Servlet technology was created as a portable way to provide dynamic, user-oriented content.

3. What is Java servlet

The Servlet is a Java programming language class used to extend the capabilities of servers that host applications accessed through 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.

For such applications, Java Servlet technology defines HTTP-specific servlet classes.

You can use the interfaces and classes in the package javax.servlet and javax.servlet.http packages to work with servlets. All servlets must implement the Servlet interface, which defines lifecycle methods.

• HttpServlet (provides methods such doGet and doPost for handling HTTP-specific services)
• GenericServlet (for generic service)
• Servlet Request
• Servlet Response

4. Conclusion

To sum up, we have learned the Servlet. You can find your code samples in our GitHub repository.