按以下要求编写程序( ) 创建一个Rectangle类,添加width和height两个成员变量( ) 在Rectangle中添加两种方法分别计算矩形的周长和面积( ) 编程利用Rectangle输出一个矩形的周长和面积解答:Public class Rectangle {Float width, height; public Rectangle(float width, float height) { this.width = width; this.height = height; } public float getLength( ){ return (this.width + this.height) * 2; } public float getArea( ){ return this.width * this.height; } public static void main(String ] args) { Rectangle rect = new Rectangle(10, 20); System.out.println("周长是:" + rect.getLength( )); System.out.println("面积是:" + rect.getArea( )); }}
发布时间:2024-04-25 16:43:04