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, and a class Circle storing the radius of the circle. Such class will have...
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In this program, we will java Program see how to calculate the area of a circle when the radius is given.
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,...
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) {...
接口Circlearea.java：package test;public interface Circlearea { public static double PI = 3.14;public double area(double r);} 圆类Circle.java：package test;public class Circle implements Circlearea { public double r;public Circle(double r) { this.r = r;} //圆面积 public double...
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...
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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); ...