package Circle;import java.util.Scanner;public class Circle { private double Radius; public double getRadius() { return Radius; } public void setRadius(double r) { this.Radius=r; } public Circle()//无参构造方法 { this.Radius=0;//初始化为0 System.out.println("圆"); } public Circle(double r)//带参构造方法 { this.Radius=r; } public double getRadius() { return Radius; } public double getArea()//求圆的面积 { double r=this.Radius; return r*r*3.14; } public double getPerimeter()//求圆的周长 { return this.Radius*3.14*2; } public void show() { Scanner cin=new Scanner(System.in); System.out.println("请输入半径:"); this.setRadius(cin.nextInt()); System.out.println("半径=;"+this.getRadius()); System.out.println("周长;"+this.getPerimeter()); System.out.println("面积="+this.getArea()); } public static void main(String args[]) { Circle c=new Circle(); c.show(); } }
原文地址:https://www.cnblogs.com/gt33/p/8934082.html
时间: 2024-08-06 14:02:02