java - 最后的预期计算与测试仪不匹配。我的 setDimensions 方法有什么问题吗？

Question

对于我的编码类，我们正在创建一个类来计算我们 window 公司的 window 玻璃的成本。当使用测试器对我的代码进行评分时，我更改窗口尺寸的方法似乎不起作用。这是窗口的构造函数:

public Window(double width, double height) {
    double rectangleArea = width*height;
    double radius = width/2;
    double circleArea= Math.PI*Math.pow(radius, 2);
    double semiCircleArea= circleArea/2;
    double areaFeetSquared= rectangleArea + semiCircleArea;
    area= areaFeetSquared*SQUARE_INCHES_PER_SQUARE_FOOT;
    double amountOfGlaze= area/SQUARE_INCHES_PER_OUNCE_OF_GLAZE;
    costOfGlaze= amountOfGlaze*COST_PER_OUNCE;
}

这是我的 setDimensions 方法不起作用

public void setDimensions(double theWidth, double theHeight) {
    width= theWidth;
    height= theHeight;
}

如果您需要更多背景信息，我很乐意在询问时提供更多信息。感谢您的阅读，希望您能帮助我。

Answer 1

除了更新宽度和高度之外，您还需要像在构造函数中一样重新计算面积。

public Window(double width, double height) {
    this.width = width;
    this.height = height;
    calculateArea();
}

private void calculateArea() {
    double rectangleArea = width * height;
    double radius = width / 2;
    double circleArea = Math.PI * Math.pow(radius, 2);
    double semiCircleArea = circleArea / 2;
    double areaFeetSquared = rectangleArea + semiCircleArea;
    area = areaFeetSquared * SQUARE_INCHES_PER_SQUARE_FOOT;
    double amountOfGlaze = area / SQUARE_INCHES_PER_OUNCE_OF_GLAZE;
    costOfGlaze = amountOfGlaze * COST_PER_OUNCE;
}

public void setDimensions(double width, double height) {
    this.width = width;
    this.height = height;
    calculateArea();
}