第四周作业-键盘输入数据 和 数据类型第二题

import java.util.Scanner;

public class ComputeArea {
public static void main(String args[])
{final double PI=3.14159;
double area;
double radius=0.0;
Scanner sc=new Scanner(System.in);
while (sc.hasNextDouble()){
radius=sc.nextDouble();
area=PI*radius*radius;
System.out.println("The area for the circle of 10 is"+area);
}
sc.close();
area=PI*10*10;
System.out.println("The area for the circle of 10 is"+area);
}
}