当我运行 Rectangle.java 时，我可以获得矩形中输入的长度和宽度，但是当我尝试使用 getter 计算面积/周长时，结果为零
我尝试添加和删除 setter，在 getArea 和 getPerimeter 中放入 getter/setter 方法，但似乎没有任何效果
//Code provided by the teacher as a template
Rectangle temp = new Rectangle();
temp.print();
System.out.println();
temp.setLength(2.5);
temp.setWidth(3.0);
//Consider how your rectangle will change after setting the length and width to specific values.
temp.print();
System.out.println();
Rectangle r = new Rectangle(3.5,2);
r.print();
//My Class
public class Rectangle
{
private static double length;
private static double width;
private static double perimeter;
private static double area;
public Rectangle(double length, double width)
{
setLength(length);
setWidth(width);
}
public Rectangle()
{
}
public static double getLength()
{
return length;
}
public static void setLength(double length)
{
Rectangle.length = length;
}
public static double getWidth()
{
return width;
}
public static void setWidth(double width)
{
Rectangle.width = width;
}
public static double getPerimeter(double length, double width)
{
return 2*width+2*length;
}
public static double getArea(double length, double width)
{
area= getLength()*getWidth();
return length*width;
}
public static String print()
{
String Rectangle = new String();
System.out.println("This rectangle has a length of "+length+" and a width of "+width);
System.out.println("The area of the rectangle is: "+ area);
System.out.println("The perimeter of the rectangle is: "+ perimeter);
return Rectangle;
}
}
没有错误消息。
输出：
该矩形的长度为 0.0，宽度为 0.0 矩形的面积为： 0.0 矩形的周长为： 0.0
该矩形的长度为 2.5，宽度为 3.0 矩形的面积为： 0.0 矩形的周长为： 0.0
该矩形的长度为 3.5，宽度为 2.0 矩形的面积为： 0.0 矩形的周长为： 0.0
慕盖茨4494581
相关分类