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public class BankAccountDemo {
  public static void main(String[] args) {
      BankAccount account = new BankAccount("John Doe", 1000.00);
      System.out.println("Initial Account Balance: " + account.getBalance());

      account.deposit(500.00);
      System.out.println("Balance after deposit: " + account.getBalance());

      try {
          account.withdraw(2000.00);
      } catch (InsufficientFundsException e) {
          System.out.println("Error: " + e.getMessage());
      }

      System.out.println("Final Account Balance: " + account.getBalance());
  }
}

class BankAccount {
  private String owner;
  private double balance;

  public BankAccount(String owner, double initialBalance) {
      this.owner = owner;
      this.balance = initialBalance;
  }

  public void deposit(double amount) {
      balance += amount;
  }

  public void withdraw(double amount) throws InsufficientFundsException {
      if (amount > balance) {
          throw new InsufficientFundsException("Insufficient funds for withdrawal");
      }
      balance -= amount;
  }

  public double getBalance() {
      return balance;
  }
}

class InsufficientFundsException extends Exception {
  public InsufficientFundsException(String message) {
      super(message);
  }
}