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Duration字面意思是持续时间
Duration duration = Duration.ofSeconds(30); 使用between()方法创建Duration对象，计算两个时间点之间的时间间隔。例如： LocalDateTime start = LocalDateTime.now(); LocalDateTime end = start.plusMinutes(15); Duration duration = Duration.between(start, end); Duration duration = Duration.ofMinutes(30); long minutes = duration.toMinutes(); // 获取时间间隔的分钟数 Duration halfDay = Duration.ofHours(12); Duration updatedDuration = duration.plusMinutes(15); // 增加15分钟的时间间隔 boolean isNegative = duration.isNegative(); // 判断是否为负时间间隔
Duration durationDays = Duration.ofDays(1);//天 Duration durationHours = Duration.ofHours(1);//小时 Duration durationMinutes = Duration.ofMinutes(1);//分 Duration durationSeconds = Duration.ofSeconds(1);//秒 Duration durationMillis = Duration.ofMillis(1);//毫秒
Duration duration = Duration.ofDays(1);//设置一天时间
long timeHours = duration.toHours();//小时
long timeMinutes = duration.toMinutes();//分钟
long timeMillis = duration.toMillis();//毫秒
long timeNanos = duration.toNanos();//纳秒
String timeString = duration.toString(); //此持续时间的字符串表示形式,使用基于ISO-8601秒*的表示形式,例如 PT8H6M12.345S
System.out.println("timeHours时间="+timeHours);
System.out.println("timeMinutes时间="+timeMinutes);
System.out.println("timeMillis时间="+timeMillis);
System.out.println("timeNanos时间="+timeNanos);
System.out.println("timeString时间="+timeString);
long todayTimeMillis = System.currentTimeMillis();
long yesterdayTimeMillis = todayTimeMillis - 24 * 60 * 60 * 1000;
Instant start = Instant.ofEpochMilli(yesterdayTimeMillis);
Instant end = Instant.ofEpochMilli(todayTimeMillis);
Duration duration = Duration.between(start, end);
System.out.println("天数="+duration.toDays());
注意这个天数是可以负数,意味着如果开始时间比结束时间更后面就会得到负数天数