计算商品过期具体时间

计算商品过期时间. 例如商品的生产日期为 2021-08-09, 60天过期

package com.thc.demo.thread;

import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;


public class TimeTest {

    public static void main(String[] args) {
        DateTimeFormatter df = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");

        String s = "2021-08-09 10:12:05";
        LocalDateTime ldt = LocalDateTime.parse(s,df);
        LocalDateTime localDateTime = ldt.plusDays(60L);
        System.out.println(localDateTime);
    }
}