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Describe what an Interface is and how it?s different from a
Class.
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Answer Posted / amit upadhyay
interface is collection of abstract method.we can not
define any method in interface.we can implement that
abstract method by using the class.there is a restriction
in interface that you have to implement all the abstract
method in the class which is declared in interface.and we
can not create an object of interface.if we want to execute
the interface method then we have to implement first that
interface in any class after that create the object of
class ,then we can access execute that method
but in class we have to define the methods, which is
declered.we can also access that method through the object
of the class.
| Is This Answer Correct ? | 9 Yes | 5 No |
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Objective The objective of this problem is to test the understanding of Object-Oriented Programming (OOP) concepts, in particular, on encapsulation. Problem Description Create a program for managing customer’s bank accounts. A bank customer can do the following operations: 1. Create a new bank account with an initial balance. 2. Deposit money into his/her account. 3. Withdraw money from his/her account. For this operation, you need to output “Transaction successful” if the intended amount of money can be withdrawn, otherwise output “Transaction unsuccessful” and no money will be withdrawn from his/her account. Input The input contains several operations and is terminated by “0”. The operations will be “Create name amount”, “Deposit name amount”, or “Withdraw name amount”, where name is the customer’s name and amount is an integer indicating the amount of money. There will be at most 100 bank accounts and they are all created on the first month when the bank is opening. You may assume that all account holders have unique names and the names consist of only a single word. Output The output contains the transaction result of withdrawal operations and the final balance of all customers after some withdrawal and deposit operations (same order as the input). Sample Input Create Billy 2500 Create Charlie 1000 Create John 100 Withdraw Charlie 500 Deposit John 899 Withdraw Charlie 1000 0
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