四舍五入到最接近的百分位数

Question

我是一名新程序员，我想知道如何四舍五入到最接近的百分之一。 这是代码

import java.util.Scanner;

public class Main {

  public static void main(String[] args) {
    Scanner in = new Scanner(System.in);

    System.out.print("Input first number: ");
    double num1 = in.nextDouble();

    System.out.print("Input second number: ");
    double num2 = in.nextDouble();

    System.out.println(num1 + " + " + num2 + " = " + (num1 + num2));

    System.out.println(num1 + " - " + num2 + " = " + (num1 - num2));

    System.out.println(num1 + " x " + num2 + " = " + (num1 * num2));

    System.out.println(num1 + " / " + num2 + " = " + (num1 / num2));
  }
}

请提供代码答案，四舍五入到最接近的百分之一。谢谢。