Java Data Type - 如何将格式设置为两个小数位：设置最大分数位数

import java.text.NumberFormat;

public class Main {
  public static void main(String args[]) {
    NumberFormat nf = NumberFormat.getInstance();

    System.out.println("Default format: " + nf.format(1234567.678));

    nf.setMaximumFractionDigits(2);

    System.out.println("Format with two decimal places: " + nf.format(1234567.678));

  }
}