In Chap. 8 we introduced a BankAccount class and a collection class to hold bank accounts called Bank. The Bank class was implemented using a List in the form of an ArrayList class. (a) If we were to...

In Chap. 8 we introduced a BankAccount class and a collection class to hold bank accounts called Bank. The Bank class was implemented using a List in the form of an ArrayList class. (a) If we were to change from a List to a Map, what would be the key type of the Map and what would be the value type? (b) Write a fragment of code that declares a Map to hold BankAccount objects and add two BankAccount objects into this map. (c) Write a fragment of code that uses a forEach loop to display all BankAccount objects in the map that have a balance over 100.