计算球的体积,不要忘记体积公式就好。
/** * Created by YangYuan on 2017/12/8. */ public class Problem2002 { public static void main(String[] args) { final double PI = 3.1415927; Scanner scanner = new Scanner(System.in); while (scanner.hasNext()) { double r = scanner.nextDouble(); double result = PI * r * r * r * 4 / 3; DecimalFormat df = new DecimalFormat("0.000"); System.out.println(df.format(result)); } } }