Java tutorial
//package com.java2s; /* * Copyright (C) 2014 Google Inc. All Rights Reserved. * * 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; public class Main { /** * Builds a simple hash for a day by concatenating year and day of year together. Note that two * {@link java.util.Calendar} inputs that fall on the same day will be hashed to the same * string. */ public static String getHashedDay(Calendar day) { return day.get(Calendar.YEAR) + "-" + day.get(Calendar.DAY_OF_YEAR); } }