java - 第二个输出必须为真，但显示为假

Question

我必须确定哪些房间更大，我的代码是:

public class Apartment {

    private int room;
    private int squareMeters;
    private int pricePerSquareMeter;

    public Apartment(int rooms, int squareMeters, int pricePerSquareMeter) {
        this.room = room;
        this.squareMeters = squareMeters;
        this.pricePerSquareMeter = pricePerSquareMeter;
    }

    public boolean larger(Apartment otherApartment) {
        if (this.room > otherApartment.room) {
            return true;
        }
        return false;
    }

    public static void main(String[] args) {
        Apartment studioManhattan = new Apartment(1, 16, 5500);
        Apartment twoRoomsBrooklyn = new Apartment(2, 38, 4200);
        Apartment fourAndKitchenBronx = new Apartment(3, 78, 2500);

        System.out.println(studioManhattan.larger(twoRoomsBrooklyn));
        System.out.println(fourAndKitchenBronx.larger(twoRoomsBrooklyn));
    }

}

输出:

false
false

如您所见，第一个输出是假的，没关系，第二个也是假的，但是当我们阅读这些代码时，我们很容易看出第二个房间一定是真的。在这个练习中，我们应该得到如下输出:

false
true

你能解释一下我错在哪里吗？我可以通过哪些方式获得正确的输出？

Answer 1

你应该改变

public Apartment(int rooms, int squareMeters, int pricePerSquareMeter) {
        this.room = room; // Same as this.room = this.room, no effect at all.
        this.squareMeters = squareMeters;
        this.pricePerSquareMeter = pricePerSquareMeter;
    }

到

public Apartment(int rooms, int squareMeters, int pricePerSquareMeter) {
        this.room = rooms; // Typo was here.
        this.squareMeters = squareMeters;
        this.pricePerSquareMeter = pricePerSquareMeter;
    }