Question

PYTHON PROGRAMMING LANGUAGE

Design a class named Savings Account that contains: A private int data field named id for the savings account. A private float data field named balance for the savings account. A private float data field named annuallnterestRate that stores the current interest rate. A_init_ that creates an account with the specified id (default 0), initial balance (default 100), and annual interest rate (default 0). . The accessor and mutator methods for id, balance, and annuallnterestRate. A method named getMonthlyInterestRate() that returns the monthly interest rate. A method named getMonthlyInterest() that returns the monthly interest. A method named withdraw that withdraws a specified amount from the account. A method named deposit that deposits a specified amount to the account. Draw the UML diagram for the class, and then implement the class. (Hint: The method getMonthlyInterest() is to return the monthly interest amount, not the interest rate. Use this formula to calculate the monthly interest: balance * monthlyInterestRate, monthlyInterestRate is annuallnterestRate /12. Note that annuallnterestRate is a percent (like 4.598). You need to divide it by 100.) Write a test program that creates an Savings Account object with an account id of 1234, a balance of $25,000, and an annual interest rate of 3.5%. Use the withdraw method to withdraw $2,500, use the deposit method to deposit $3,000, and print the id, balance, monthly interest rate, and monthly interest.

Answer 1

CODE IN PYTHON:

class Savings_Account: def __init__(self, id = 0, balance = 0, interestRate = 0): self.__id = id self.__balance = balance self.__annualInterestRate = interestRate def getBalance(self): return self.__balance def getId(self): return self.__id def getAnnualInterestRate(self): return self.__annualInterestRate def setBalance(self, balance): self.__balance = balance def setId(self, id): self.__id = id def setAnnualInterestRate(self, interestRate): self.__annualInterestRate = interestRate def getMonthlyInterestRate(self): return self.__annualInterestRate / 12 def getMonthlyInterest(self): return self.__balance * self.getMonthlyInterestRate() / 100 def withdraw(self, amount): if self.__balance >= amount: self.__balance -= amount else: print("Insufficient funds...") def deposit(self, amount): self.__balance += amount account = Savings_Account(1234, 25000, 3.5) account.withdraw(2500) account.deposit(3000) print("ID : ", account.getId()) print("Balance : ", account.getBalance()) print("Monthly Interest rate : ", account.getMonthlyInterestRate()) print("Monthly Interest : ", account.getMonthlyInterest()) INDENTATION:

class Savings Account: def __init__(self, id = 0, balance = 0, interestRate = 0): self._id = id self. __balance = balance self.__annualInterestRate = interestRate def getBalance(self): return self._balance def getId(self): return self._id def getAnnualInterestRate(self): return self. _annualInterestRate def setBalance(self, balance): self. _balance = balance def setId(self, id): self._id = id def setAnnualInterestRate(self, interestRate): self. __annualInterestRate = interestRate def getMonthlyInterestRate(self): return self. _annualInterestRate / 12 def getMonthlyInterest(self): return self. __balance * self.getMonthlyInterestRate() / 100 def withdraw(self, amount): if self.__balance >= amount: self. __balance -= amount else: print("Insufficient funds...") def deposit(self, amount): self._balance += amount

account = Savings Account(1234, 25000, 3.5) account withdraw(2500) account.deposit(3000) print("ID : ", account.getId()) print("Balance : ", account.getBalance()) print("Monthly Interest rate : ", account.getMonthlyInterestRate()) print("Monthly Interest : ", account.getMonthlyInterest())

OUTPUT:

Savings Account C:\Users\madhu\venv\Python3.8\Scripts\python.exe D:/PythonWorld/HelloWorld/Savings_Account.py ID : 1234 Balance : 25500 Monthly Interest rate : 0.2916666666666667 Monthly Interest : 74.37500000000001 Process finished with exit code o