How to create two different types of Overdue rent turn

Question

My two different local dates of overdue is not printing. The only one that prints is the upper one, and where I can put the availability again for renting?

    public void displayOverdue() {
        List<Rent> rents = new ArrayList<Rent>();
        LocalDate rentDate = LocalDate.of(2019, Month.MARCH, 15);
        LocalDate dueDate = rentDate.plusDays(30);
        if (dueDate.isBefore(LocalDate.now(ZoneId.of("Europe/Malta")))) {
            System.out.println("The rented bike is Overdue; was due on " + dueDate);


        LocalDate rentDate1 = LocalDate.of(2019, Month.APRIL, 15);
        LocalDate dueDate1 = rentDate1.plusDays(30);
         if (dueDate1.isBefore(LocalDate.now(ZoneId.of("Europe/Malta")))) {
             System.out.println("The rented bike is Overdue; was due on " + dueDate1);  
            }
        }

        }

Addedd my Rent class

import java.util.*;
import java.time.*;

public class Rent implements Serializable {
    private String name;
    private int days;
    protected LocalDate dateOfRent;
    protected LocalDate returnDate;
    boolean availability= true;
List<Rent> rents = new ArrayList<Rent>();
    //getter---setter methods





    @Override
    public String toString() {
        return "Bike name:" + name + " Days: " + days;
    }