JAVA自学之每日一题（五）

题目要求：矩形类

package 矩形类;

public class Test
{

    public static void main(String[] args)
    {
        Rectangle a = new Rectangle(4, 40);
        Rectangle b = new Rectangle(3.5, 35.9);
        System.out.println("第一个矩形的 宽为:" + a.width + "高为:" + a.height + "面积为:"
                + a.getArea() + "周长为:" + a.getPerimeter());
        System.out.println("第二个矩形的 宽为:" + b.width + "高为:" + b.height + "面积为:"
                + b.getArea() + "周长为:" + b.getPerimeter());

    }

}

class Rectangle
{
    double width;
    double height;

    Rectangle()
    {
    }

    Rectangle(double newWidth, double newHeight)
    {
        width = newWidth;
        height = newHeight;
    }

    double getArea()
    {
        return width * height;
    }

    double getPerimeter()
    {
        return 2 * (width + height);
    }

}