Bank_System

Problem 1

We are going to implement a banking system. It's very important to maintain data of each account in the bank. So, we need to create an Account class. We will also create a SpecialAccount class that inherits from Account class and has a special feature.

• Create Account class.
• Create balance and account number attributes in account class (private not public)
• Create a suitable constructor that sets the account number and the initial balance value.
• Create setter and getter for each attribute.
• Override the method toString ( ) inherited from class Object to make it return a meaningful string representation of the account information.
• Create methods withdraw and deposit to be able to take or put money. To withdraw, enough balance should be available.
• Create another class SpecialAccount that inherits from class Account.
• Use polymorphism to override method withdraw to allow over drafting with maximum limit of 1000 LE.
• Write a main class to test class Account. It should create two accounts of two types and test all the functions you created in them.

Problem 2

We are going to implement a bank system. It is required to implement a Client class to represent the bank’s clients. So, you are required to do the following:

• Create Client class.
• Add name, nationalID, address, phone and account private attributes for the class.
• Create a suitable constructor that sets these attributes. (Note that before creating a new Client, you will need to create an object of type Account and pass it as a parameter to the client object’s constructor to be his account).
• Create setter and getter for each attribute.
• Override the method toString ( ) inherited from class Object to make it return a meaningful string representation of the client information. String representing Client information, should also include his account’s information.
• Create another class CommercialClient that inherits from class Client. A commercial client is a company not a person. It has an extra attribute commercialID and setter and getter for it. Its NationalID is set to 00000000000000.
• Use polymorphism to override method toString print the commercial client details including his commercial ID instead of the national ID.
• Write a main class to create two clients of two types and test all the functions you created in them

Problem 3

Now you have Account and Client classes and their subclasses (assume they exist until your colleagues finish doing the real ones). Let's make bank class

• Create Bank class.

• Create name, address and phone attributes in Bank class.

• Create a constructor and suitable setters and getters.

• Create an ArrayList of accounts in Bank class, this array maintains all accounts’ data.

• Create an ArrayList of clients in Bank class, this array maintains all clients’ data.

• Create methods to

  ➢(1) add a new client and his account (can be special client or commercial account also)

  ➢(2) display existing clients and their accounts.

  Each time a new client and account are created, they are added to the two ArrayLists of accounts and clients.

• Integrate your Bank class with Client and Account classes and use them in it.