输入圆的半径，得出圆的周长和面积JAVA代码

import java.util.Scanner;

public class Circle {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("请输入圆的半径：");
double radius = scanner.nextDouble();
double perimeter = 2 * Math.PI * radius;
double area = Math.PI * radius * radius;
System.out.println("圆的周长为：" + perimeter);
System.out.println("圆的面积为：" + area);
}
}