java最小时间获取_Java 8 获取某天最大(23:59:59)最小(00:00:00)时间

import java.text.SimpleDateFormat;

import java.time.Instant;

import java.time.LocalDateTime;

import java.time.LocalTime;

import java.time.ZoneId;

import java.util.Date;

public class GetMaxMinTime {

public static void main(String[] args) {

Date date = new Date();

System.out.println("今天开始时间：" + getStartOfDay(date));

System.out.println("今天结束时间：" + getEndOfDay(date));

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

System.out.println(sdf.format(getStartOfDay(date)));

System.out.println(sdf.format(getEndOfDay(date)));

}

// 获得某天最大时间 2017-10-15 23:59:59

public static Date getEndOfDay(Date date) {

LocalDateTime localDateTime = LocalDateTime.ofInstant(Instant.ofEpochMilli(date.getTime()), ZoneId.systemDefault());;

LocalDateTime endOfDay = localDateTime.with(LocalTime.MAX);

return Date.from(endOfDay.atZone(ZoneId.systemDefault()).toInstant());

}

// 获得某天最小时间 2017-10-15 00:00:00

public static Date getStartOfDay(Date date) {

LocalDateTime localDateTime = LocalDateTime.ofInstant(Instant.ofEpochMilli(date.getTime()), ZoneId.systemDefault());

LocalDateTime startOfDay = localDateTime.with(LocalTime.MIN);

return Date.from(startOfDay.atZone(ZoneId.systemDefault()).toInstant());

}

}