Phase IV

- Added BankAcctAppGUI as a GUI frontend to replace CLI
- Enhanced DataEntry to use Regex patterns for input validation

src/bankAcctApp/CheckingAccount.java

@@ -1,8 +1,8 @@
-/* Phase III */
+/* Phase IV */
 
 package bankAcctApp;
 
-// Class representing checking accounts
+//Class representing checking accounts
 public class CheckingAccount extends Account {
 
     // Overridden method for withdrawals in checking accounts
@@ -14,29 +14,30 @@ public class CheckingAccount extends Account {
         }
         setBalance(newBalance); // Update balance
     }
-
+   
     // Overridden method for deposits in checking accounts
     @Override
     public void deposit(double amount) {
         setBalance(getBalance() + amount - getSvcFee()); // Add amount and deduct service fee
     }
-
+   
     // Overridden method for applying accrued interest in checking accounts
     @Override
     public double applyAccruedInterest(String transactionDate) {
         double interest = 0.0;
-    	if (getBalance() <= 0.0) { // Ensure balance is positive for interest accrual
+        if (getBalance() <= 0.0) { // Ensure balance is positive for interest accrual
             System.out.println("This account has an insufficient balance for interest to apply.");
         } else {
-	        interest = getBalance() * (getInterestRate() / 100); // Calculate interest
-	        setBalance(getBalance() + interest); // Add interest to the balance
-	        logTransaction(transactionDate, "INT", interest); // Log the interest transaction
+               interest = getBalance() * (getInterestRate() / 100); // Calculate interest
+               setBalance(getBalance() + interest); // Add interest to the balance
+               logTransaction(transactionDate, "INT", interest); // Log the interest transaction
         }
-    	return interest;
+        return interest;
     }
     // Implementation of balance() method from AccountInterface
     @Override
     public double balance() {
         return getBalance(); // Return the current balance
     }
-}
+   }
+