Java tutorial
//package com.java2s; /* * Copyright (C) 2010 The Android Open Source Project * * 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. */ import java.util.Calendar; import java.util.Date; import java.util.Locale; import java.util.TimeZone; public class Main { public static final TimeZone UTC_TIMEZONE = TimeZone.getTimeZone("UTC"); private static final Calendar getUtcDate(Date date, boolean noYear) { final Calendar calendar = Calendar.getInstance(UTC_TIMEZONE, Locale.US); calendar.setTime(date); if (noYear) { calendar.set(Calendar.YEAR, 0); } return calendar; } private static final Calendar getUtcDate(int year, int month, int dayOfMonth) { final Calendar calendar = Calendar.getInstance(UTC_TIMEZONE, Locale.US); calendar.clear(); calendar.set(Calendar.YEAR, year); calendar.set(Calendar.MONTH, month); calendar.set(Calendar.DAY_OF_MONTH, dayOfMonth); return calendar; } }