带空白的Java格式号

import java.text.DecimalFormat;

public class NumberFormatter {
    public static void main(String[] args) {
        long number = 1234567890L;
        DecimalFormat formatter = new DecimalFormat("#,###");
        String formattedNumber = formatter.format(number);
        System.out.println(formattedNumber);  // 输出: 1 234 567 890
    }
}

import java.text.DecimalFormat;
import java.util.Locale;

public class NumberFormatter {
    public static void main(String[] args) {
        long number = 1234567890L;
        DecimalFormat formatter = new DecimalFormat("#,###", new DecimalFormatSymbols(Locale.US));
        String formattedNumber = formatter.format(number);
        System.out.println(formattedNumber);  // 输出: 1 234 567 890
    }
}