使用此掩码将int转换为date : DD/MM/YYYY

import datetime

int_value = 20220101
date_str = str(int_value)
date = datetime.datetime.strptime(date_str, "%Y%m%d").strftime("%d/%m/%Y")
print(date)

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

int intValue = 20220101;
String dateStr = String.valueOf(intValue);
DateFormat inputFormat = new SimpleDateFormat("yyyyMMdd");
DateFormat outputFormat = new SimpleDateFormat("dd/MM/yyyy");
Date date = inputFormat.parse(dateStr);
String formattedDate = outputFormat.format(date);
System.out.println(formattedDate);

const intValue = 20220101;
const dateStr = String(intValue);
const year = dateStr.slice(0, 4);
const month = dateStr.slice(4, 6);
const day = dateStr.slice(6, 8);
const formattedDate = `${day}/${month}/${year}`;
console.log(formattedDate);