import java.util.ArrayList;
import java.util.Date;
public class Account {
protected String Name;
protected int Id;
protected double Balance;
protected double AnnualInterestRate;
protected Date DateCreated;
protected ArrayList<Transaction> Transactions;
public Account() {
DateCreated = new Date();
Transactions = new ArrayList<>();
}
public Account(int id, double balance) {
this();
Id = id;
Balance = balance;
}
public Account(String name, int id, double balance) {
this(id, balance);
Name = name;
}
public int getId() {
return Id;
}
public void setId(int id) {
Id = id;
}
public double getBalance() {
return Balance;
}
public void setBalance(double balance) {
Balance = balance;
}
public double getAnnualInterestRate() {
return AnnualInterestRate;
}
public void setAnnualInterestRate(double annualInterestRate) {
AnnualInterestRate = annualInterestRate;
}
public Date getDateCreated() {
return DateCreated;
}
public double getMonthlyInterestRate() {
return Balance * (AnnualInterestRate / 12) / 100;
}
public void withdraw(double amount) {
Transactions.add(new Transaction('W', amount, Balance, "withdraw"));
Balance -= amount;
}
public void deposit(double amount) {
Transactions.add(new Transaction('D', amount Balance, "deposit"));
Balance += amount;
}
@Override
public String toString() {
return "Account name: " + Name + "\n" + "Interest rate: " +
AnnualInterestRate + "\n" + Transactions;
}
public ArrayList<Transaction> getTransactions() {
return new ArrayList<>(Transactions);
}
}
import java.util.Scanner;
public class TestAccount {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
Account[] accounts = new Account[10];
for (int i = 0; i < accounts.length; i++) {
accounts[i] = new Account(i, 100);
}
int option = 0;
int id = askForID(accounts);
while (option != 4) {
Account user = getAccount(accounts, id);
System.out.print(
"Main menu\n" +
"1: check balance\n" +
"2: withdraw\n" +
"3: deposit\n" +
"4: exit\n" +
"Enter a choice: ");
option = input.nextInt();
switch (option) {
case 1:
System.out.println("The balance is $" + user.getBalance() +
".\n");
break;
case 2:
System.out.print("Enter an amount to withdraw: ");
user.withdraw(input.nextDouble());
break;
case 3:
System.out.print("Enter an amount to deposit: ");
user.deposit(input.nextDouble());
break;
case 4:
System.out.println("Logged out...");
System.out.println("");
id = askForID(accounts);
option = 0;
break;
default:
System.out.println("Invalid input.. Enter a number 1-4");
}
}
}
public static int askForID(Account[] accounts) {
Scanner input = new Scanner(System.in);
int id = 0;
boolean isValidID = false;
while (!isValidID) {
System.out.print("Enter an ID: ");
id = input.nextInt();
if (!hasID(accounts, id)) {
System.out.println("INVALID ID: Try again.");
} else {
isValidID = true;
}
}
return id;
}
public static Account getAccount(Account[] accounts, int id) {
for (Account account : accounts) {
if (id == account.getId()) {
return account;
}
}
return null;
}
public static boolean hasID(Account[] accounts, int id) {
for (Account account : accounts) {
if (id == account.getId()) {
return true;
}
}
return false;
}
}
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