import java.time.LocalDate;
import java.util.Comparator;
import java.util.List;
import java.util.Objects;
import java.util.Scanner;
import java.util.stream.Collectors;
import java.util.stream.Stream;

class ProcessDeliveryOrders {

    public static DeliveryOrder findFirstOrder(List<DeliveryOrder> orders) {
        return new DeliveryOrder();  // Breakpoint.
        // write your code here
    }

    public static void printAddressesToDeliver(List<DeliveryOrder> orders) {
        System.out.println(); // Breakpoint.
        // write your code here
    }

    public static void main(String[] args) {
        final Scanner scanner = new Scanner(System.in);

        List<DeliveryOrder> orders = Stream.iterate(1, i -> scanner.hasNextLine(), i -> i + 1)
                .map(i -> scanner.nextLine().split("\\|"))
                .map(parts -> new DeliveryOrder(
                        Long.parseLong(parts[0]), parts[2], LocalDate.parse(parts[1])))
                .collect(Collectors.toList());

        System.out.println(findFirstOrder(orders));  // Breakpoint.

        printAddressesToDeliver(orders);
    }
}

class DeliveryOrder {
    private final long orderId;
    private final String address;
    private final LocalDate deliveryDate;
    // there are even more fields: customer name, phone, products info, etc

    public DeliveryOrder() {
        this.orderId = -1;
        this.address = "No address";
        this.deliveryDate = LocalDate.MIN;
    }

    public DeliveryOrder(long orderId, String address, LocalDate deliveryDate) {
        this.orderId = orderId;
        this.address = address;
        this.deliveryDate = deliveryDate;
    }

    public static Comparator<DeliveryOrder> getComparatorByDeliveryDate() {
        return Comparator.comparing(DeliveryOrder::getDeliveryDate);
    }

    public long getOrderId() {
        return orderId;
    }

    public String getAddress() {
        return address;
    }

    public LocalDate getDeliveryDate() {
        return deliveryDate;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        DeliveryOrder that = (DeliveryOrder) o;
        return address.equals(that.address) &&
                deliveryDate.equals(that.deliveryDate);
    }

    @Override
    public int hashCode() {
        return Objects.hash(address, deliveryDate);
    }

    @Override
    public String toString() {
        return orderId + "|" + deliveryDate + "|" + address;
    }
}

这是一项学习任务。
要运行它，我在控制台中输入以下内容：
样品输入：

1|2021-09-03|112 Mammoth Street, Colorado Springs, CO 80911
2|2021-09-05|369 Woodside Court, Troy, NY 12180
3|2021-09-02|837 Bowman Street, Helena, MT 59601
4|2021-09-03|112 Mammoth Street, Colorado Springs, CO 80911

问题

调试器永远不会到达代码中标记的三个断点中的任何一个。如果不在每个断点上停下来，我就无法理解任务并继续下去。
你能帮助我理解：
1.为什么调试器永远不会到达这些断点中的任何一个？
1.如何科普这一问题？