Java tutorial
//package com.java2s; /** * Copyright 2016 JustWayward Team * <p> * 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 * <p> * http://www.apache.org/licenses/LICENSE-2.0 * <p> * 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 { private static SimpleDateFormat sdf = new SimpleDateFormat(); public final static String FORMAT_DATE_TIME = "yyyy-MM-dd HH:mm:ss.SSS"; public static String getCurrentTimeString(String format) { if (format == null || format.trim().equals("")) { sdf.applyPattern(FORMAT_DATE_TIME); } else { sdf.applyPattern(format); } return sdf.format(new Date()); } }