/* * Copyright 2016 Anton Tananaev (anton@traccar.org) * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.traccar.helper; import java.text.SimpleDateFormat; import java.time.Instant; import java.time.ZoneId; import java.time.format.DateTimeFormatter; import java.util.Calendar; import java.util.Date; public final class DateUtil { private DateUtil() { } public static Date correctDay(Date guess) { return correctDate(new Date(), guess, Calendar.DAY_OF_MONTH); } public static Date correctYear(Date guess) { return correctDate(new Date(), guess, Calendar.YEAR); } public static Date correctDate(Date now, Date guess, int field) { if (guess.getTime() > now.getTime()) { Date previous = dateAdd(guess, field, -1); if (now.getTime() - previous.getTime() < guess.getTime() - now.getTime()) { return previous; } } else if (guess.getTime() < now.getTime()) { Date next = dateAdd(guess, field, 1); if (next.getTime() - now.getTime() < now.getTime() - guess.getTime()) { return next; } } return guess; } private static Date dateAdd(Date guess, int field, int amount) { Calendar calendar = Calendar.getInstance(); calendar.setTime(guess); calendar.add(field, amount); return calendar.getTime(); } public static Date parseDate(String value) { return Date.from(Instant.from(DateTimeFormatter.ISO_ZONED_DATE_TIME.parse(value))); } public static String formatDate(Date date) { return formatDate(date, true); } public static String formatDate(Date date, boolean zoned) { if (zoned) { return DateTimeFormatter.ISO_OFFSET_DATE_TIME.withZone(ZoneId.systemDefault()).format(date.toInstant()); } else { return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(date); } } }