Here you can find the source of createThreadLocal(final String format)
private static ThreadLocal<SimpleDateFormat> createThreadLocal(final String format)
//package com.java2s; /*// w w w . j a va 2 s .c o m * Copyright 2004-2014 SmartBear Software * * Licensed under the EUPL, Version 1.1 or - as soon as they will be approved by the European Commission - subsequent * versions of the EUPL (the "Licence"); * You may not use this work except in compliance with the Licence. * You may obtain a copy of the Licence at: * * http://ec.europa.eu/idabc/eupl * * Unless required by applicable law or agreed to in writing, software distributed under the Licence is * distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either * express or implied. See the Licence for the specific language governing permissions and limitations * under the Licence. */ import java.text.SimpleDateFormat; public class Main { private static ThreadLocal<SimpleDateFormat> createThreadLocal(final String format) { return new ThreadLocal<SimpleDateFormat>() { protected SimpleDateFormat initialValue() { return new SimpleDateFormat(format); } ; }; } }