/* * Copyright (C) 2016 mohamed_taman * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package eg.com.tm.java8.features.datetime.zone; import java.time.LocalDateTime; import java.time.ZoneId; import java.time.ZonedDateTime; import java.time.format.DateTimeFormatter; import java.time.format.FormatStyle; import java.util.Set; import java.util.function.Predicate; /** * * @author mohamed_taman */ public class TimeZones { public static void main(String[] args) { DateTimeFormatter dtf = DateTimeFormatter.ofLocalizedDateTime(FormatStyle.SHORT); LocalDateTime currentDT = LocalDateTime.now(); System.out.println(dtf.format(currentDT)); ZonedDateTime gmt = ZonedDateTime.now(ZoneId.of("GMT+0")); System.out.println(dtf.format(gmt)); ZonedDateTime ny = ZonedDateTime.now(ZoneId.of("America/New_York")); System.out.println(dtf.format(ny)); Set<String> zones = ZoneId.getAvailableZoneIds(); Predicate<String> condition = str -> str.contains("London"); zones.forEach(z -> { if(condition.test(z)) System.out.println(z); }); } }