001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 018package org.apache.log4j.helpers; 019 020import java.util.Calendar; 021import java.util.TimeZone; 022import java.util.Date; 023import java.text.FieldPosition; 024import java.text.ParsePosition; 025import java.text.DateFormatSymbols; 026 027/** 028 Formats a {@link Date} in the format "dd MMM yyyy HH:mm:ss,SSS" for example, 029 "06 Nov 1994 15:49:37,459". 030 031 @author Ceki Gülcü 032 @since 0.7.5 033*/ 034public class DateTimeDateFormat extends AbsoluteTimeDateFormat { 035 private static final long serialVersionUID = 5547637772208514971L; 036 037 String[] shortMonths; 038 039 public 040 DateTimeDateFormat() { 041 super(); 042 shortMonths = new DateFormatSymbols().getShortMonths(); 043 } 044 045 public 046 DateTimeDateFormat(TimeZone timeZone) { 047 this(); 048 setCalendar(Calendar.getInstance(timeZone)); 049 } 050 051 /** 052 Appends to <code>sbuf</code> the date in the format "dd MMM yyyy 053 HH:mm:ss,SSS" for example, "06 Nov 1994 08:49:37,459". 054 055 @param sbuf the string buffer to write to 056 */ 057 public 058 StringBuffer format(Date date, StringBuffer sbuf, 059 FieldPosition fieldPosition) { 060 061 calendar.setTime(date); 062 063 int day = calendar.get(Calendar.DAY_OF_MONTH); 064 if(day < 10) 065 sbuf.append('0'); 066 sbuf.append(day); 067 sbuf.append(' '); 068 sbuf.append(shortMonths[calendar.get(Calendar.MONTH)]); 069 sbuf.append(' '); 070 071 int year = calendar.get(Calendar.YEAR); 072 sbuf.append(year); 073 sbuf.append(' '); 074 075 return super.format(date, sbuf, fieldPosition); 076 } 077 078 /** 079 This method does not do anything but return <code>null</code>. 080 */ 081 public 082 Date parse(java.lang.String s, ParsePosition pos) { 083 return null; 084 } 085}