Here you can find the source of formatDate2DateTimeStr()
public static final String formatDate2DateTimeStr()
//package com.java2s; /**// w w w . ja va 2s. c o m * DateTimeUtil.java * * Copyright 2010 Baidu.com, Inc. * * Baidu.com 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.SimpleDateFormat; import java.util.Date; public class Main { /** * Format the current date time to "yyyy-MM-dd HH:mm:ss" format string. */ public static final String formatDate2DateTimeStr() { return formatDate2DateTimeStr(new Date()); } public static final String formatDate2DateTimeStr(Date date) { SimpleDateFormat s = new SimpleDateFormat("yyyy-MM-dd_HH_mm_ss"); return s.format(date); } public static final String formatDate2DateTimeStr(long date) { SimpleDateFormat s = new SimpleDateFormat("yyyy-MM-dd_HH_mm_ss"); return s.format(new Date(date)); } }