What is the difference between doGet() and doPost() methods in the Servlet API?

When dealing with a Servlet in the context of the Servlet API, it's important to understand the difference between the doGet() and doPost() methods.

doGet() Method:

The doGet() method is used to handle HTTP GET requests sent to the servlet. This method is typically used for requests that are intended to retrieve data from the server without modifying anything on the server side. The data sent to the server in a GET request is appended to the URL in the form of query parameters.

doPost() Method:

In contrast, the doPost() method is used to handle HTTP POST requests. POST requests are commonly used when data needs to be sent to the server to update or modify information. Unlike GET requests, POST requests send data in the request body, which is not visible in the URL.

Differences Summary:

• doGet() is used for handling GET requests, while doPost() is used for handling POST requests.
• Data in GET requests is appended to the URL, while data in POST requests is sent in the request body.
• doGet() is idempotent, meaning it should not have any side effects, whereas doPost() can have side effects as it may update server data.

Understanding the distinction between the doGet() and doPost() methods is essential in developing servlets that can effectively handle different types of HTTP requests.