To produce a program that calculates and outputs the circumference and area of a circlegiven its radius.You are asked to model the system by two classes. An application class Driver containingthe main method, an
编写一个完整的Java Application 程序。包含接口ShapeArea,类Circle、Rectangle、Test,具体要求如下:⑴接口ShapeArea:
(1)定义一个Circle类,包含一个double型的radius属性代表圆的半径,一个findArea()方法返回圆的面积。 (2)定义一个类PassObject,在类中定义一个方法printAreas(),该方法的定义如下:publicvoidprintAreas(Cirlce c,inttimes) 在printAreas方法中打印输出1到time之间的每个整数半径值,以及对应的面积。例如,times为5,...
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public Circle(){ super();System.out.println("输入圆的半径：");r=sc.nextDouble();setR(r);double s=getArea();System.out.println("圆的面积S="+s);} public void setR(double r){ this.r=r;} public Double getArea(){ double s=(Math.PI)*(Math.pow(this.r, 2));return s...
JAVA 定义一个圆类Circle定义一个圆类Circle,其中:radius属性表示半径,calcArea方法用于计算圆的面积 答案 public class Circle { double radius; public Circle(double rad) { radius = rad; } public double calcArea() { return Math.PI * radius * radius; } public static void main(String[] args) {...
width = width; } double area() { switch (shape) { case RECTANGLE: return length * width; case CIRCLE: return Math.PI * (radius * radius); default: throw new AssertionError(shape); } } } 标签类的缺点是:不同的实现逻辑混杂在一起,可读性较低,容易出错。 标签类本质上是对类层次结构的...
Circle: area=50.27, Volumn=0.00 Clinder: area=251.33, Volumn=235.62 此处给出主函数 public class ShapeTest { public static void main(String[] args) { Shape s[] = new Shape[3]; s[0] = new Rectangle(2,3); s[1] = new Circle(4); ...
5.Write a Java program to create a class called Circle with a private instance variable radius. Provide public getter and setter methods to access and modify the radius variable. However, provide two methods called calculateArea() and calculatePerimeter() that return the calculated area and perime...
However, instead of perpendicular corners, the corners are rounded with a horizontal diameter of arcWidth and a vertical diameter of arcHeight. If width or height is a negative number, nothing is drawn. If width, height, arcWidth, and arcHeight are all equal, you get a circle....