Answered: equirements :a. Implement the class…

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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Question

in java

part 1) Write the Account class. The UML diagram of the class is represented below

Requirements

:a. Implement the class strictly according to its UML one-to-one (do not include anything extra, do not miss any data fields or methods)

b. Add comments to your program (mark where data fields, constructors, getters, setters

and toString() are)
c. You can use the automatic generation approach for Getters, setters and toString() inEclipse.
d. In getMonthlyInterestRate(), please return the monthly interest rate. DO NOT leave this
method body blank!
e. In getMonthlyInterest(), please returns the monthly interest (NOT THE INTEREST RATE),
DO NOT leave this method body blank!
f. In deposit() method, please deposit a specified amount to the account (Hint: balance +=
depositAmount). DO NOT leave this method body blank!
g. In withdraw() method, please withdraw a specified amount from the account (Hint:
balance -= withdrawAmount). DO NOT leave this method body blank!
h. Please use decimal to represent the annual interest rate. Example: if the annual interest
rate is 2%, please use 0.02 in the annualInterestRate data field.

HINT:
a. Monthly interest is balance * Monthly Interest Rate.
b. Monthly Interest Rate is Annual Interest Rate / 12.
c. Example, if the balance is $1,000 and the annual interest rate is 0.02, the monthly
interest rate is 0.02 / 12 = 0.001666666666667 and the monthly interest is 1000 * 0.02 /
12 = 1.666666666666667.
d. When create dataCreated, use: private java.util.Date dateCreated = new
java.util.Date();

part 2) : create a AccountTest class in another .jave file to test the class Account
you just created

Requirements:
a. Create an object of Account class with an account ID of 1122, a balance of $20,000,
object name is Account1.
b. Set the annualInterestRate to 0.045 using the setter of annualInterestRate.
c. Use the withdraw() method to withdraw $2,500
d. Print the balance, the monthly interest, and the date.

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Account
- id: int = 0
- balance: double = 0
- annualInterestRate: double = 0.02
- dateCreated: java.util.Date
+ Account()
+ Account(id: int, balance: double)
+ getId(): int
+ setId(newId: int): void
+ getBalance(): double
+ setBalance(newBalance: double): void
+ getAnnualInterestRate(): double
+ setAnnualInterestRate(newRate: double): void
+ toString(): String
+ getDataCreated: java.util.Date
+ getMonthlyInterestRate(): double
+ getMonthlyInterest(): double
+ deposit(depositAmount: double): void
+ withdraw(withdrawAmount: double): void
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