JAVA独学の毎日1題(五)

テーマ要求:矩形類

package    ;

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("         :" + a.width + "  :" + a.height + "   :"
                + a.getArea() + "   :" + a.getPerimeter());
        System.out.println("         :" + b.width + "  :" + b.height + "   :"
                + b.getArea() + "   :" + 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);
    }

}