计算当前是时间距离凌晨零点的时间

1.java8环境

public static void main(String[] args) { Date currentTime = new Date(); //从一个 Instant和区域ID获得 LocalDateTime实例 LocalDateTime localDateTime=LocalDateTime.ofInstant(currentTime.toInstant(), ZoneId.systemDefault()); //获取第第二天零点时刻的实例 LocalDateTime toromorrowTime=LocalDateTime.ofInstant(currentTime.toInstant(), ZoneId.systemDefault()) .plusDays(1).withHour(0).withMinute(0).withSecond(0).withNano(0); //ChronoUnit日期枚举类,between方法计算两个时间对象之间的时间量 long seconds = ChronoUnit.SECONDS.between(localDateTime, toromorrowTime); System.out.println(seconds); }

2.

public static void main(String[] args) { long totalTime = 0; try { SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMddHHmmss"); String currentTime = simpleDateFormat.format(new Date()); String substring = currentTime.substring(0, 8)+"235959"; long nowTime = (simpleDateFormat.parse(currentTime).getTime())/1000; long endTime = (simpleDateFormat.parse(substring).getTime())/1000; totalTime = endTime - nowTime; // int hour = (int)(Math.floor(totalTime / 3600)); int minute = (int)(Math.floor((totalTime - hour*3600)/60)); int second = (int)(Math.floor(totalTime - hour*3600 - minute*60); } catch (ParseException e) { logger.info("获取时间差异常"); e.printStackTrace(); } System.out.println(totalTime); }