Exercise 3

BankAccount.java

+import java.text.DecimalFormat;
+
+public class BankAccount {
+    int accountNumber;
+    String name;
+    double balance;
+    double deposit;
+    double withdrawal;
+    double bankfees;
+
+    private static final DecimalFormat PoundsFormat = new DecimalFormat("0.00");
+
+    public BankAccount(int accountNumber, String name, double balance)
+    {
+        this.accountNumber = accountNumber;
+        this.name = name;
+        this.balance = balance;
+    }
+
+    public void deposit(double deposit)
+    {
+        this.deposit = deposit;
+        balance = balance + deposit;
+    }
+
+    public void withdrawal(double withdrawal)
+    {
+        this.withdrawal = withdrawal;
+        bankFees();
+    }
+
+    public void addOverdraft(double OverdraftLimit)
+    {
+        if((balance - withdrawal) - bankfees < -OverdraftLimit)
+        {
+            System.out.println("Your specified withdrawal amount exceeds the overdraft limit. Please withdraw a lower amount.");
+        }
+        else
+        {
+            balance = (balance - withdrawal) - bankfees;
+        }
+    }
+
+    public void bankFees()
+    {
+        if(balance > 0.00)
+        {
+            bankfees = (balance / 100) * 5;
+        }
+        else
+        {
+            bankfees = (balance / 100) * -5;
+        }
+        addOverdraft(100.00);
+    }
+
+    public void display()
+    {
+        System.out.println("Account Number: " + accountNumber);
+        System.out.println("Account Owner: " + name);
+        System.out.println("Balance: £" + PoundsFormat.format(balance));
+    }
+}

Main.java

+public class Main {
+    public static void main(String[] args) {
+        BankAccount bankAccount = new BankAccount(1, "Lui", 100.00);
+        SavingsAccount savingsAccount = new SavingsAccount(1, "Lui", 100.00);
+        bankAccount.withdrawal(50.00);
+        bankAccount.display();
+        savingsAccount.withdrawal(50.00);
+        savingsAccount.display();
+    }
+}

SavingsAccount.java

+import java.text.DecimalFormat;
+
+public class SavingsAccount {
+    int accountNumber;
+    String name;
+    double balance;
+    double deposit;
+    double withdrawal;
+    double bankfees;
+    double interest;
+
+    private static final DecimalFormat PoundsFormat = new DecimalFormat("0.00");
+
+    public SavingsAccount(int accountNumber, String name, double balance)
+    {
+        this.accountNumber = accountNumber;
+        this.name = name;
+        this.balance = balance;
+    }
+
+    public void deposit(double deposit)
+    {
+        this.deposit = deposit;
+        balance = balance + deposit;
+        interest = (balance / 100) * 5;
+        accrueInterest(interest);
+    }
+
+    public void withdrawal(double withdrawal)
+    {
+        this.withdrawal = withdrawal;
+        if(withdrawal > balance)
+        {
+            System.out.println("You have insufficient funds to withdraw that amount. Your current balance is: £" + PoundsFormat.format(balance));
+        }
+        if(withdrawal > 100.00)
+        {
+            System.out.println("You can't withdraw more than £100.00 from your saving accounts. Please withdraw a lower amount.");
+        }
+        else
+        {
+            balance = balance - withdrawal;
+            interest = (balance / 100) * -5;
+            accrueInterest(interest);
+        }
+    }
+
+    public void accrueInterest(double interest)
+    {
+        balance = balance + interest;
+    }
+
+    public void display()
+    {
+        System.out.println("Account Number: " + accountNumber);
+        System.out.println("Account Owner: " + name);
+        System.out.println("Balance: £" + PoundsFormat.format(balance));
+    }
+}
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