difference between servlet lifecycle and filter lifecycle

Question

is there any difference between servlet and filter lifecycle?.

Answer 1

No, both a servlet and a filter:

• are instantiated (once) when the context starts
• the init(..) method is called
• they handle each request - first it passes through all filters and then reaches the servlet
• when the context is destroyed (i.e. when your container stops, or your application is undeployed from the manager console), the destroy(..) method is called

Answer 2

I can add that in filters you should invoke next filter in the chain if needed.