Java-1.9

题目描述：

编写程序，显示宽为4.5，高为7.9的矩形的面积和周长。

代码：

public class Rectangle {
    public static void main(String[] args){

        final double width=4.5,height=7.9;
        double area = width*height;
        double girth = (width+height)*2;
        System.out.println("The girth of the rectangle is: "+girth);
        System.out.println("The area of the rectangle is: "+area);

    }
}

运行示例：