Java Servlets and Java Server Pages (JSPs) are Java programs that run on a Java application server and extend the capabilities of the Web server. Servlets are Java classes that run in a Java-enabled server and handle an HTTP request and provide an HTTP response, usually in the form of an HTML page. JSPs are a specification for combining Java with HTML to provide dynamic content for web pages. They are used to create platform-independent, dynamic web applications.

Here are some key differences between Servlets and JSPs:

• Servlets can accept all protocol requests, including HTTP, while JSPs can only accept HTTP requests.
• In the MVC architecture, servlets work as a controller, while JSPs work as a view.
• Servlets are faster than JSPs, as they have a short response time.
• Servlets are used when you do not like to create a separate process to handle each and every request of the client, while JSPs are generally more suitable for complex business logic and rapid development.

In summary, Servlets and JSPs are both Java technologies used for server-side programming and extending the capabilities of web servers. Servlets are Java classes that handle HTTP requests and provide HTTP responses, while JSPs are a specification for combining Java with HTML to provide dynamic content for web pages.