What is the lifecycle of a Servlet and explain each phase?

The Lifecycle of a Servlet: Explained

When it comes to understanding the lifecycle of a Servlet, it is important to note that it goes through a series of phases from initialization to destruction. Let's explore each phase in detail:

1. Initialization:

During this phase, the Servlet container creates an instance of the Servlet and calls its init() method. This is where the Servlet is initialized and any necessary resources are set up. The init() method is called only once in the lifecycle of the Servlet.

2. Request Handling:

Once initialized, the Servlet is ready to handle client requests. When a request is received, the Servlet container calls the service() method of the Servlet, passing the request and response objects as parameters. The service() method processes the request and generates the response.

3. Destruction:

At some point, the Servlet container decides to remove the Servlet instance from service. To do this, it calls the destroy() method of the Servlet. This method allows the Servlet to release any resources it has been holding and perform any necessary cleanup before being destroyed.

Understanding the lifecycle of a Servlet is crucial for developing efficient and functional web applications. By following these phases, developers can ensure that their Servlets perform optimally and deliver the desired functionality to users.

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