Why only doGet() or doPost() & not service

[Syed Khateeb]

Why is it advised to override doGet()&/doPost() instead directly overriding service()?
Is it only because the possibility of having implementations for for other doXyz() methods is not possible?

[Deepak Bala]

You can override other doXXX methods as well. Most of the time you can accomplish what you want the servlet to do using the doGet and doPost methods.

[Chetan Raju]

By Overriding service() method, you need to implement logic to read the type of HTTP request (GET/POST). But, currently the service method already does this and dispatches the request to doPost()/doGet() method appropriately.