Add new file

BankAccount.java

+public class BankAccount {
+    // instance variables
+    private double balance;
+    private int accountNumber;
+    private String name;
+    private double overdraftLimit;
+
+    // constructor
+    public BankAccount(int accountNumber, String name) {
+        this.accountNumber = accountNumber;
+        this.name = name;
+        this.balance = 0.0;
+        this.overdraftLimit = 0.0;
+    }
+
+    // methods
+    public double getBalance() {
+        return this.balance;
+    }
+
+    public void deposit(double amount) {
+        this.balance += amount;
+    }
+
+    public void withdraw(double amount) {
+        if (this.balance + this.overdraftLimit >= amount) {
+            this.balance -= amount;
+        } else {
+            System.out.println("Insufficient funds");
+        }
+    }
+
+    public void bankFees() {
+        // apply a 5% fee on the current balance
+        double fee = this.balance * 0.05;
+        this.balance -= fee;
+    }
+
+    public void display() {
+        System.out.println("Account Number: " + this.accountNumber);
+        System.out.println("Account Holder: " + this.name);
+        System.out.println("Current Balance: " + this.balance);
+    }
+
+    public void addOverdraft(double overdraftLimit) {
+        this.overdraftLimit = overdraftLimit;
+    }
+}
+
+class SavingsAccount extends BankAccount {
+    // constructor
+    public SavingsAccount(int accountNumber, String name) {
+        super(accountNumber, name);
+    }
+
+    // accrue interest on the current balance
+    public void accrueInterest() {
+        double interest = this.getBalance() * 0.05;
+        this.deposit(interest);
+    }
+
+    // override the addOverdraft() method to prevent a SavingsAccount from having an
+    // overdraft limit
+    @Override
+    public void addOverdraft(double overdraftLimit) {
+        // do nothing
+    }
+}