如何使用谓词重构此代码

Question

我在使用此代码时遇到问题，我正在尝试使用谓词进行重构并具有更好的可读性。我有两个长度不一的点列​​表（其中有一个值，一个日期和一个布尔值不可用），长度不一，而缺少点只能在较短列表的开头。我想在较短列表的开头添加与较长日期相同的缺失点。

public class Point{
    private int value;
    private ZoneDateTime Date;
    private boolean unavailability;
}

Point firstPoint = Point (10, "10/10/2019");
Point secondPoint = Point (10, "10/11/2019");
Point thirdPoint = Point (10, "10/12/2019");
Point unavailable = Point(null, null, true);

List<Point> firstCurve = new ArrayList<>();
firstCurve.add(firstPoint);
firstCurve.add(secondPoint);
firstCurve.add(thirdPoint);
List<Point> secondCurve = new ArrayList<>();
secondCurve.add(thirdPoint);
List<Point> completeList = new ArrayList<>();

for (Point p : firstCurve) {
    if (p.getDate().compareTo(secondCurve.get(0).getDate()) < 0) {
        /* Put the unavailable point at the begining with the flag unavailability */
        unavailable.setDate(p.getDate());
        unavailable.setPas(p.getPas());
        completeList.add(unavailable);
    } else {
        /* If there is data, copy in the new list */
        for (Point ptCourt : secondCurve) {
            completeList.add(ptCourt);
        }
    }
}