Java Unix Date getUnixDate(Date date)

Description

Get unix style date string.

License

Open Source License

Declaration

public static String getUnixDate(Date date) 

Method Source Code

//package com.java2s;
/***************************************************************************
 * Copyright (c) 2006 Eike Stepper, Fuggerstr. 39, 10777 Berlin, Germany.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * //  w w w  .  j a  v  a2  s .  c o m
 * Contributors:
 *    Eike Stepper - initial API and implementation
 **************************************************************************/

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

public class Main {
    private static final String[] MONTHS = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct",
            "Nov", "Dec" };
    private final static ThreadLocal AFTER_SIX = new ThreadLocal() {

        protected Object initialValue() {
            return new SimpleDateFormat(" yyyy");
        }
    };
    private final static ThreadLocal BEFORE_SIX = new ThreadLocal() {

        protected Object initialValue() {
            return new SimpleDateFormat("HH:mm");
        }
    };

    /**
     * Get unix style date string.
     */
    public static String getUnixDate(Date date) {
        long dateTime = date.getTime();
        if (dateTime < 0) {
            return "------------";
        }

        Calendar cal = new GregorianCalendar();
        cal.setTime(date);
        String firstPart = MONTHS[cal.get(Calendar.MONTH)] + ' ';

        String dateStr = String.valueOf(cal.get(Calendar.DATE));
        if (dateStr.length() == 1) {
            dateStr = ' ' + dateStr;
        }
        firstPart += dateStr + ' ';

        long nowTime = System.currentTimeMillis();
        if (Math.abs(nowTime - dateTime) > 183L * 24L * 60L * 60L * 1000L) {
            DateFormat fmt = (DateFormat) AFTER_SIX.get();
            return firstPart + fmt.format(date);
        } else {
            DateFormat fmt = (DateFormat) BEFORE_SIX.get();
            return firstPart + fmt.format(date);
        }
    }
}

Related

1. escapeUnixChar(String strToEscape)
2. getDispTimeByUnixTime(long unixSec)
3. getUnixDate()
4. getUnixDate(long millis)
5. getUnixDate(String s)
6. getUnixTime(String dateTime)
7. getUnixTime2NoneTime(String longTime)