Here you can find the source of parseToMillis(String s)
private static long parseToMillis(String s)
//package com.java2s; /**/*w ww . j av a2 s. c o m*/ * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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.text.DateFormat; import java.text.ParseException; import java.text.SimpleDateFormat; public class Main { private static ThreadLocal<DateFormat> DATE_FORMAT = new ThreadLocal<DateFormat>() { @Override protected DateFormat initialValue() { return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); } }; private static long parseToMillis(String s) { try { return DATE_FORMAT.get().parse(s).getTime(); } catch (ParseException ex) { throw new RuntimeException(ex); } } }