Here you can find the source of createDateFormat(String pattern, TimeZone timeZone)
public static DateFormat createDateFormat(String pattern, TimeZone timeZone)
//package com.java2s; /*// ww w. ja va 2s . c o m * Copyright 2004-2014 the Seasar Foundation and the Others. * * 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.TimeZone; public class Main { public static DateFormat createDateFormat(String pattern) { // as lenient return createDateFormat(pattern, (TimeZone) null, false); } public static DateFormat createDateFormat(String pattern, TimeZone timeZone) { // as lenient return createDateFormat(pattern, timeZone, false); } public static DateFormat createDateFormat(String pattern, TimeZone timeZone, boolean strict) { if (pattern == null) { String msg = "The argument 'pattern' should not be null!"; throw new IllegalArgumentException(msg); } final SimpleDateFormat sdf = new SimpleDateFormat(pattern); if (timeZone != null) { sdf.setTimeZone(timeZone); } sdf.setLenient(!strict); return sdf; } }