Revise List Interface, as given in Listing 10-1 of the previous chapter, so that each of the methods add, remove, replace, and get Entry returns either null or false instead of throwing an exception...

Revise List Interface, as given in Listing 10-1 of the previous chapter, so that each of the methods add, remove, replace, and get Entry returns either null or false instead of throwing an exception if the position passed to it is out of range. Then revise the class A List so that it implements your revised interface.