java8时间

import java.time.Duration;
import java.time.Instant;
import java.time.format.DateTimeFormatter;

import java.time.LocalDateTime;

LocalDateTime.parse("2018-02-09T18:34:08.369")

LocalDateTime.parse("1970-01-01T20:00"))

Instant beginTime = Instant.now();

Instant endTime = Instant.now();
LOGGER.info("took milliseconds total: {}", Duration.between(beginTime, endTime).toMillis());

.format(DateTimeFormatter.ISO_DATE));