Implement the class Savings Account according to the following UML: Savings Account -annual InterestRate: double The annual interest rate for each saving account. -balance: double The account balance. +Savings Account(balance: double) Constructs an account object with a specified balance. +calculateMonthlyInterest(): double Returns the monthly interest. The interest should be added to savings Balance. +modifyInterestRate(annual InterestRate:double):void Sets a new annual InterestRate. +getBalance(): double Return the balance. +setBalance(balance: double): void Set a new balance. Use a private static data field to store the annualInterestRate for each of the savers. Each instance of the class contains a private instance data field savings Balance, indicating the amount the saver currently has on deposit. Provide method calculateMonthlyInterest to calculate the monthly interest by multiplying the savingBalance by annualInterestRate divided by 12; this interest should be added to savings Balance. Provide a static method modify InterestRate that sets the annualInterestRate to a new value. Provide one constructor which takes a double type parameter to initialize the savingsBalance. C. Based on the previous Savings Account, write a test program called TestSavingsAccount that should do the following tasks: 1) Create a savings account object called myAccount with $10,000. 2) Set the annual interest rate as 6%, which is 0.06. 3) Calculate and display monthly interest of the account. 4) Display the new balance of the account. The original balance is $10000.0 The monthly interest is $50.0 The new balance is $10050.0 A sample output:
Implement the class Savings Account according to the following UML: Savings Account -annual InterestRate: double The annual interest rate for each saving account. -balance: double The account balance. +Savings Account(balance: double) Constructs an account object with a specified balance. +calculateMonthlyInterest(): double Returns the monthly interest. The interest should be added to savings Balance. +modifyInterestRate(annual InterestRate:double):void Sets a new annual InterestRate. +getBalance(): double Return the balance. +setBalance(balance: double): void Set a new balance. Use a private static data field to store the annualInterestRate for each of the savers. Each instance of the class contains a private instance data field savings Balance, indicating the amount the saver currently has on deposit. Provide method calculateMonthlyInterest to calculate the monthly interest by multiplying the savingBalance by annualInterestRate divided by 12; this interest should be added to savings Balance. Provide a static method modify InterestRate that sets the annualInterestRate to a new value. Provide one constructor which takes a double type parameter to initialize the savingsBalance. C. Based on the previous Savings Account, write a test program called TestSavingsAccount that should do the following tasks: 1) Create a savings account object called myAccount with $10,000. 2) Set the annual interest rate as 6%, which is 0.06. 3) Calculate and display monthly interest of the account. 4) Display the new balance of the account. The original balance is $10000.0 The monthly interest is $50.0 The new balance is $10050.0 A sample output:
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Transcribed Image Text:b.
Implement the class Savings Account according to the
following UML:
Savings Account
-annual InterestRate: double
The annual interest rate for each saving
account.
-balance: double
The account balance.
+Savings Account(balance: double)
Constructs an account object with a
specified balance.
+calculateMonthlyInterest(): double
Returns the monthly interest. The interest
should be added to savings Balance.
Sets a new annual InterestRate.
+modifyInterestRate(annual InterestRate:double):void
+getBalance(): double
+setBalance(balance: double): void
Return the balance.
Set a new balance.
Use a private static data field to store the annualInterestRate for each of the savers. Each
instance of the class contains a private instance data field savings Balance, indicating the amount
the saver currently has on deposit. Provide method calculateMonthlyInterest to calculate the
monthly interest by multiplying the savingBalance by annualInterest Rate divided by 12; this
interest should be added to savingsBalance. Provide a static method modify Interest Rate that
sets the annualInterestRate to a new value. Provide one constructor which takes a double type
parameter to initialize the savingsBalance.
C.
Based on the previous Savings Account, write a test program
called TestSavings Account that should do the following tasks:
1) Create a savings account object called myAccount with $10,000.
2) Set the annual interest rate as 6%, which is 0.06.
3) Calculate and display monthly interest of the account.
4) Display the new balance of the account.
The original balance is $10000.0
The monthly interest is $50.0
The new balance is $10050.0
A sample output:
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