When to choose checked and unchecked exceptions

Question

In Java (or any other language with checked exceptions), when creating your own exception class, how do you decide whether it should be checked or unchecked?

My inst

Answer 1

Whnever an exception is less likely expected, and we can proceed even after catching that, and we can not do anything to avoid that exception then we can use checked exception.

Whenever we want to do something meaningful when a particular exceptions happens and when that exception is expected but not certain, then we can use checked exception.

Whenever exception navigating in different layers, we don't need to catch it in every layer, in that case, we can use runtime exception or wrap exception as unchecked exception.

Runtime exception is used when exception most likely to be happened, there is no way of going further and nothing can be recoverable. So in this case we can take precautions with respect to that exception. EX: NUllPointerException, ArrayOutofBoundsException. These are more likely to happen. In this scenario, we can take precautions while coding to avoid such exception. Otherwise we will have to write try catch blocks every where.

More general exceptions can be made Unchecked, less general are checked.