还有其他方法可以将字符串格式的时间戳转换为数字毫秒格式吗？

const timestamp = "1632950400000"; // 字符串时间戳
const milliseconds = new Date(Number(timestamp)).getTime(); // 转换为数字毫秒格式
console.log(milliseconds);

import datetime

timestamp = "1632950400000"  # 字符串时间戳
date_obj = datetime.datetime.fromtimestamp(int(timestamp) // 1000)
milliseconds = (date_obj - datetime.datetime(1970, 1, 1)).total_seconds() * 1000
print(milliseconds)

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class Main {
    public static void main(String[] args) {
        String timestamp = "1632950400000"; // 字符串时间戳
        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        try {
            Date date = new Date(Long.parseLong(timestamp));
            String formattedDate = dateFormat.format(date);
            System.out.println(formattedDate);
        } catch (NumberFormatException e) {
            e.printStackTrace();
        }
    }
}