Question

in java

instructions

Assignment 2 Complete Exercise E9.3 (checking account problem). What to turn in: A zip file containing ONLY 3 java source code.files (BankAccount.java, BudgetCheckingAccount.java, and CheckingAccount.java). NO FOLDERS may be included in your zip file, or l will simply reject it. You are not giving me the AccountDemo.java file, because I have my own copy, and you are not permitted to modify it. Also, the package statement must be correct, as explained later in the assignment description. You have to do it a bit differently from the way described in the book. Create a new subclass named BudgetCheckingAccount that extends CheckingAccount, and override the withdrawal method to implement the penalty mentioned in the exercise specification. Also, prevent the actual withdrawal from creating a negative balance. (The penalty, on the other hand CAN create a negative balance.) YOU ARE NOT PERMITTED TO MODIFY THE CheckingAccount class. (Companies often sell you their code library without giving you access to the source code.) Of course, you will have to make appropriate changes to the startup class, named AccountDemo. DO NOT MODIFY IT, not even the package statemen! Right-click to download a ZIP file (named Asg 2 start.zip) containing the classes you need for this assignment. Make sure all our.java files have this statement on the first line package che9.exercises E93 This is your program's required output. Notice how the first overdraft has a penalty of $20, but the second and third overdrafts have penalties of $30 each. Account 1 balance - 5e0.0e Attempting to withdraw 50.00 from Account 1 Account 1 balance 450.00 Attempting to withdraw 40.00 from Account 1 Account 1 balance 410.00 Attempting to withdraw 500.00 from Account 1 Account 1 balance 390.0 Attempting to withdraw 391.00 from Account 1 Account 1 balance 369.00 Attempting to withdraw 370.00 from Account 1 Account 1 balance 338.00

Answer 1

java code:

package accountdemo;

import java.util.Date;
import java.util.Scanner;

//account class
class BankAccount
{
private int id;
private double balance;
private Date dateCreated;
private static int nextId=1;
  
BankAccount()
{}
//constructor
BankAccount(double balance){
id=nextId;
this.balance=balance;
nextId++;
dateCreated=new Date();
}
  
//getter
public int getId()
{
return id;
}
  
public double getBalance()
{
return balance;
}
  
public Date getDateCreated()
{
return dateCreated;
}
  
//withdraw
public void withdraw(double amount)
{
  
balance -= amount;
  
}
  
//deposit
public void deposit(double amount)
{
balance += amount;
}
  
//return string
public String toString()
{
return "Account ID: "+id +
" Balance: " + balance +
" Date Created: "+ dateCreated;
}

  
}

//CheckingAccount class
class CheckingAccount extends BankAccount
{
double fee;
int withdrawals;
  
//constructor
public CheckingAccount(double balance,double fee) {
//super(balance-fee);
//this.fee=fee;
}

public CheckingAccount() {
withdrawals=0;
}
public void withdraw(double amount)
{
final int FREE_WITHDRAWALS =3;
final int WITHDRAWALS_FEE =1;
  

if(super.getBalance()>amount)
super.withdraw(amount);
else
{
withdrawals++;
  
  
if(withdrawals<3)
super.withdraw(20);
if(withdrawals>2){
super.withdraw(30);
if(withdrawals>1)
super.withdraw(WITHDRAWALS_FEE);
}
}

}
//deduct fee
public void deductFee(double fee)
{
this.fee=fee;
}
//setter
public void setFee(double fee)
{
this.fee=fee;
}
  
//getter
public double getFee()
{
return fee;
}
  
//return string
public String toString()
{
return (super.toString()+ " Monthly Fee: "+fee);
}
  
}

//SavingsAccount class
class SavingsAccount extends BankAccount
{
double interest;
  
//constructor
public SavingsAccount(double balance,double interest) {
  
super(balance+(balance*interest/100));
this.interest=interest/100;
}
  
//setter
public void setInterest(double interest)
{
this.interest=interest;
}
  
//getter
public double getInterest()
{
return interest;
}
  
//interest caluclate function
public double calculateInterest()
{
return interest/100;
}
  
//rerurn string
public String toString()
{
return (super.toString()+ " Interest Rate: "+interest);
}
  
}

public class AccountDemo {

  
public static void main(String[] args) {
final int ACCOUNTS_SIZE =5;
  
BankAccount[] accounts =new BankAccount[ACCOUNTS_SIZE];
for(int i=0; i<accounts.length; i++)
{
accounts[i]=new CheckingAccount();
}
  
int id;
double amount;
  
id=1;
amount =50.0;
accounts[id].deposit(500);
System.out.println("Account "+id+" balance = "+accounts[id].getBalance()+"\n\n" );
System.out.println("Attempting to withdraw "+amount+" from Account "+id);
accounts[id].withdraw(amount);
System.out.println("Account "+id+" balance = "+ accounts[id].getBalance());
  
amount =40;
  
System.out.println("\nAttempting to withdraw "+amount+" from Account "+id);
accounts[id].withdraw(amount);
System.out.println("Account "+id+" balance = "+ accounts[id].getBalance());
  
  
amount =500;
  
System.out.println("\nAttempting to withdraw "+amount+" from Account "+id);
accounts[id].withdraw(amount);
System.out.println("Account "+id+" balance = "+ accounts[id].getBalance());
  
amount =391;
  
System.out.println("\nAttempting to withdraw "+amount+" from Account "+id);
accounts[id].withdraw(amount);
System.out.println("Account "+id+" balance = "+ accounts[id].getBalance());
  
amount =370;
  
System.out.println("\nAttempting to withdraw "+amount+" from Account "+id);
accounts[id].withdraw(amount);
System.out.println("Account "+id+" balance = "+ accounts[id].getBalance());
  
  
  
}
  
}

output:

Output-AccountDemo (run) X Account 1 balance500.0 Attempting to withdraw 50.0 from Account 1 Account 1 balance450.0 Attempting to withdrav 40.0 from Account 1 Account balance = 410.0 Attempting to withdraw 500.0 from Account 1 Account 1 balance390.0 Attempting to withdraw 391.0 from Account 1 Account 1 balance = 370.0 Attempting to withdrav 370.0 from Account 1 Account 1 balance339.0 BUILD SUCCESSFUL (total time 0 seconds)

//for any clarification, please do comments