Describe the use of JSP filters.

JSP filters are components that intercept requests and responses before they reach the servlet or JSP page. They can modify the request or response data, perform authentication or authorization checks, log requests, compress responses, and more. JSP filters provide a way to apply cross-cutting concerns or common functionalities to multiple servlets or JSP pages. They can be configured in the deployment descriptor (web.xml) and can be used to implement pre-processing and post-processing logic in a modular and reusable manner.