Here you can find the source of getDateFormat(String date)
public static DateFormat getDateFormat(String date)
//package com.java2s; /******************************************************************************* * Copyright 2013 AppGlu, Inc./*from ww w.ja v a2 s. c o m*/ * * 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.text.DateFormat; import java.text.SimpleDateFormat; import java.util.regex.Matcher; import java.util.regex.Pattern; public class Main { public static final String DATE_TIME_FORMAT = "yyyy-MM-dd'T'HH:mm:ssZ"; public static final String DATE_FORMAT = "yyyy-MM-dd"; public static final String TIME_FORMAT = "HH:mm:ss"; private static Pattern dateRegex; private static Pattern timeRegex; public static DateFormat getDateFormat(String date) { Matcher dateMatcher = dateRegex.matcher(date); if (dateMatcher.matches()) { return new SimpleDateFormat(DATE_FORMAT); } Matcher timeMatcher = timeRegex.matcher(date); if (timeMatcher.matches()) { return new SimpleDateFormat(TIME_FORMAT); } return new SimpleDateFormat(DATE_TIME_FORMAT); } }