一小时后更改Java日期

java.util.Calendar

Calendar cal = Calendar.getInstance();// remove next line if you're always using the current time.cal.setTime(currentDate);cal.add(Calendar.HOUR, -1);Date oneHourBack = cal.getTime();

java.util.Date

new Date(System.currentTimeMillis() - 3600 * 1000);

org.joda.time.LocalDateTime

new LocalDateTime().minusHours(1)

Java 8：java.time.LocalDateTime

LocalDateTime.now().minusHours(1)

Java 8 java.time.Instant

// always in UTC if not timezone setInstant.now().minus(1, ChronoUnit.HOURS));// with timezone, Europe/Berlin for exampleInstant.now()       .atZone(ZoneId.of("Europe/Berlin"))       .minusHours(1));