Java Timestamp Format formatTimestamp(String dateStr, String granularity)

Description

format Timestamp

License

Apache License

Declaration

public static String formatTimestamp(String dateStr, String granularity) 

Method Source Code

//package com.java2s;
/*/*w  w  w . j  ava2 s. c o  m*/
 *
 * Copyright 2011, 2012, 2013 the University of New Mexico.
 *
 * This work was supported by National Science Foundation Cooperative
 * Agreements #DEB-0832652 and #DEB-0936498.
 *
 * 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 {
    public static String formatTimestamp(String dateStr, String granularity) {
        SimpleDateFormat yearFormat = new SimpleDateFormat("yyyy");
        SimpleDateFormat yearMonthDayFormat = new SimpleDateFormat("yyyy-MM-dd");
        SimpleDateFormat iso8601Format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
        String timestamp = null;

        try {
            if (dateStr == null) {

            } else if (dateStr.length() == 4) {
                Date yearDate = yearFormat.parse(dateStr);
                timestamp = iso8601Format.format(yearDate);
            } else if (dateStr.length() == 10) {
                Date yearMonthDayDate = yearMonthDayFormat.parse(dateStr);
                timestamp = iso8601Format.format(yearMonthDayDate);
            }

            // Append the granularity if it is specified
            if (timestamp != null && granularity != null) {
                timestamp = String.format("%s/%s", timestamp, granularity);
            }
        } catch (ParseException e) {
            // Can't parse this date string. Just return null.
        }

        return timestamp;
    }
}

Related

1. formatTimestamp(long timestamp)
2. formatTimestamp(long timestamp)
3. formatTimestamp(long timestamp)
4. formatTimestamp(long timestamp)
5. formatTimestamp(long ts)
6. formatTimestamp(Timestamp dataHora)
7. formatTimeStamp(Timestamp t)
8. formatTimestamp(Timestamp t, int type)
9. formatTimestamp(Timestamp timestamp)