import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.time.LocalDate;

import java.time.LocalDateTime;

import java.time.LocalTime;

import java.time.ZoneOffset;

import java.util.Date;

import java.util.concurrent.TimeUnit;

public class QQ {

    public static void main(String[] args) throws ParseException {

        Long start = System.currentTimeMillis();

        for (int i = 0; i < 100000; i++) {

            SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd 00:05:00");

            SimpleDateFormat dateFormat2 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

            Date date = new Date();

            String dateStr = dateFormat.format(date);

            dateFormat2.parse(dateStr).getTime();

        }

        System.out.println("time1 : " + (System.currentTimeMillis() - start));

        start = System.currentTimeMillis();

        for (int i = 0; i < 100000; i++) {

            Long time = LocalDateTime.of(LocalDate.now(), LocalTime.MIN).toInstant(ZoneOffset.of("+8")).toEpochMilli();

            Long time000 = time + TimeUnit.MINUTES.toMillis(5);

        }

        System.out.println("time2: " + (System.currentTimeMillis() - start));

        System.out

                .println(LocalDateTime.of(LocalDate.now(), LocalTime.MIN).toInstant(ZoneOffset.of("+8")).toEpochMilli()

                        + TimeUnit.MINUTES.toMillis(5));

    }

}