Java Long Number to Date convert(long time)

Description

convert

License

Apache License

Declaration

public static int convert(long time) 

Method Source Code

//package com.java2s;
/*/*from w  w  w  .ja  v  a 2 s .  c  om*/
 * Copyright 2012 International Health Terminology Standards Development Organisation.
 *
 * 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
 *
 *      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.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class Main {
    private static int timeZeroInt = 1830407753;
    private static ThreadLocal<SimpleDateFormat> dateFormatterTL = new ThreadLocal<>();

    public static int convert(long time) {
        if (time == Long.MAX_VALUE) {
            return Integer.MAX_VALUE;
        }
        if (time == Long.MIN_VALUE) {
            return Integer.MIN_VALUE;
        }
        int timeInSec = (int) (time / 1000);
        return timeInSec - timeZeroInt;
    }

    public static long convert(int version) {
        if (version == Integer.MAX_VALUE) {
            return Long.MAX_VALUE;
        }
        if (version == Integer.MIN_VALUE) {
            return Long.MIN_VALUE;
        }
        long added = timeZeroInt + version;
        return added * 1000;
    }

    public static int convert(String dateStr) throws ParseException {
        if (dateStr.equalsIgnoreCase("latest")) {
            return Integer.MAX_VALUE;
        }
        SimpleDateFormat formatter = dateFormatterTL.get();
        if (formatter == null) {
            formatter = new SimpleDateFormat("yyyy.MM.dd HH:mm:ss");
            dateFormatterTL.set(formatter);
        }
        Date d = formatter.parse(dateStr);
        return convert(d.getTime());
    }
}

Related

1. convert(long number)
2. convert(long value, double[] factors, String[] unites)
3. convert(Long[] targets)
4. convert2long(String date, String format)
5. convertDate(long datenum)