Should method parameters be made as final in Java8

Question

In java8, variables are effectively final if we do not assign them again. So, it means if we are declaring a method and if we don't declare its parameters to be final, then they are effectively final if we don't assign them in the method definition. So, does making the parameters final make any difference in java8?

Answer 1

IMO, the reason to mark a parameter final is to show that you are depending on it being final. This might be the case if you are using the parameter in a lambda expression or an inner class. Marking the parameter final tells the next programmer who comes along (or you a year from now) that there is code that relies on that parameter being final.