Here you can find the source of mapByName(TimeUnit... units)
private static void mapByName(TimeUnit... units)
//package com.java2s; /* /*from ww w .j a v a 2 s.c o m*/ * Copyright 2014 Guillaume Masclet <guillaume.masclet@yahoo.fr>. * * 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.HashMap; import java.util.Map; import java.util.concurrent.TimeUnit; public class Main { private static final Map<String, TimeUnit> UNIT_MAPPING = new HashMap<>(); private static void mapByName(TimeUnit... units) { for (TimeUnit unit : units) { UNIT_MAPPING.put(unit.name().toLowerCase(), unit); } } }