0133593517.pdf

1. (Subclasses of Account) In Programming Exercise 9.7, the Account class was defined to model a bank account. An account has the properties account number, balance, annual interest rate, and date created, and methods to deposit and with- draw funds. Create two subclasses for checking and saving accounts. A checking account has an overdraft limit, but a savings account cannot be overdrawn. Draw the UML diagram for the classes and then implement them. Write a test program that creates objects of Account, SavingsAccount, and CheckingAccount and invokes their toString() methods.
2. This is my code from Exercise 9.7:

public class Exercise09_07 {

public static void main (String[] args) {

 

Account account = new Account(1122, 20000);

 

account.setAnnualInterestRate(4.5);

 

account.withdraw(2500);

 

account.deposit(3000);

 

System.out.println("Balance is " + account.getBalance());

 

System.out.println("Monthly interest is " + account.getMonthlyInterest());

 

System.out.println("This account was created at " + account.getDateCreated());

 

}

 

}

 

class Account {

 

  private int id;

  private double balance;

  private double annualInterestRate;

  private java.util.Date dateCreated;

 

  Account()

  {

      this.id = 0;

      this.balance = 0;

      this.annualInterestRate = 0;

      this.dateCreated = new java.util.Date();

  }

 

  public Account(int id, double balance) {

      super();

      this.id = id;

      this.balance = balance;

      this.dateCreated = new java.util.Date();

  }

 

  public int getId() {

      return id;

  }

 

  public void setId(int id) {

      this.id = id;

  }

 

  public double getBalance() {

      return balance;

  }

 

  public void setBalance(double balance) {

      this.balance = balance;

  }

 

  public double getAnnualInterestRate() {

      return annualInterestRate;

  }

 

  public void setAnnualInterestRate(double annualInterestRate) {

      this.annualInterestRate = annualInterestRate/100;

  }

 

  public java.util.Date getDateCreated() {

      return dateCreated;

  }

 

  public double getMonthlyInterestRate()

  {

      return this.annualInterestRate / 12;

  }

   

  public double getMonthlyInterest(){

  return getMonthlyInterestRate()*this.balance;

  }

 

  public void withdraw(double amount)

  {

      this.balance = this.balance - amount;

  }

 

  public void deposit(double amount)

  {

      this.balance = this.balance + amount;

  }

     

 

 

public static void main(String[] args) {

    CheckingAccount checking = new CheckingAccount(1, 35);

    SavingsAccount savings = new SavingsAccount(2, 25);

    checking.withdraw(10);

    savings.withdraw(10);

    

    System.out.println(checking.getBalance());

    System.out.println(savings.getBalance());

  }

}

2.