PaymentManager.java

import java.util.ArrayList;
import java.util.Scanner;

public class PaymentManager {

    private ArrayList<Payment> payments = new ArrayList<>();

    public ArrayList<Payment> getPaymentsList() {
        return payments;
    }

    public void addPayment(Payment p) {
        payments.add(p);
    }

    public int getNextPaymentID() {
        return payments.size() + 1;
    }

    public void viewPayments() {
        if (payments.isEmpty()) {
            System.out.println("No payments recorded.");
            return;
        }

        System.out.println("\n--- Payments ---");
        for (Payment p : payments) {
            System.out.println(p);
        }
    }

    public void updateStatus(int paymentID, Scanner scanner) {
        for (Payment p : payments) {
            if (p.paymentID == paymentID) {
                System.out.print("Enter new payment status (paid/pending/overdue): ");
                String st = scanner.nextLine();
                p.setStatus(st);
                System.out.println("Payment updated.");
                return;
            }
        }
        System.out.println("Payment not found.");
    }
}