Java Unix Date getUnixDate(long millis)

Description

Get unix style date string.

License

Apache License

Declaration

public final static String getUnixDate(long millis) 

Method Source Code

//package com.java2s;
/*//from w w  w.  jav  a  2s  .  co m
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF 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.util.Calendar;

import java.util.GregorianCalendar;

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

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

        StringBuffer sb = new StringBuffer(16);
        Calendar cal = new GregorianCalendar();
        cal.setTimeInMillis(millis);

        // month
        sb.append(MONTHS[cal.get(Calendar.MONTH)]);
        sb.append(' ');

        // day
        int day = cal.get(Calendar.DATE);
        if (day < 10) {
            sb.append(' ');
        }
        sb.append(day);
        sb.append(' ');

        long sixMonth = 15811200000L; // 183L * 24L * 60L * 60L * 1000L;
        long nowTime = System.currentTimeMillis();
        if (Math.abs(nowTime - millis) > sixMonth) {

            // year
            int year = cal.get(Calendar.YEAR);
            sb.append(' ');
            sb.append(year);
        } else {

            // hour
            int hh = cal.get(Calendar.HOUR_OF_DAY);
            if (hh < 10) {
                sb.append('0');
            }
            sb.append(hh);
            sb.append(':');

            // minute
            int mm = cal.get(Calendar.MINUTE);
            if (mm < 10) {
                sb.append('0');
            }
            sb.append(mm);
        }
        return sb.toString();
    }
}

Related

1. escapeUnixChar(String strToEscape)
2. getDispTimeByUnixTime(long unixSec)
3. getUnixDate()
4. getUnixDate(Date date)
5. getUnixDate(String s)
6. getUnixTime(String dateTime)
7. getUnixTime2NoneTime(String longTime)
8. parseUnixDate(String paramName, String dateStr)