Java Hour Format formatOptimal(Date d)

Description

Formats a Date to a String, leaving out trailing zero values.

License

Apache License

Declaration

static public String formatOptimal(Date d) 

Method Source Code

//package com.java2s;
/*/*from  w  w  w  .  ja  v a 2  s . c om*/
   Copyright 2013 Nationale-Nederlanden
    
   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.SimpleDateFormat;

import java.util.Date;

public class Main {
    /**
     * Format for "yyyy-MM-dd HH:mm:ss.SSS"
     */
    public static final String FORMAT_FULL_GENERIC = "yyyy-MM-dd HH:mm:ss.SSS";

    /**
     * Formats a Date to a String, leaving out trailing zero values.
     */
    static public String formatOptimal(Date d) {
        String result;
        if ((d.getTime() % 1000) == 0) {
            if (d.getSeconds() == 0) {
                if (d.getMinutes() == 0 && d.getHours() == 0) {
                    result = format(d, "yyyy-MM-dd");
                } else {
                    result = format(d, "yyyy-MM-dd HH:mm");
                }
            } else {
                result = format(d, "yyyy-MM-dd HH:mm:ss");
            }
        } else {
            result = format(d, "yyyy-MM-dd HH:mm:ss.SSS");
        }
        return result;
    }

    public static String format(Date date, String dateFormat) {
        SimpleDateFormat formatter = new SimpleDateFormat(dateFormat);
        return formatter.format(date);
    }

    public static String format(long date, String dateFormat) {
        return format(new Date(date), dateFormat);
    }

    public static String format(long date) {
        return format(new Date(date), FORMAT_FULL_GENERIC);
    }

    public static String format(Date date) {
        return format(date, FORMAT_FULL_GENERIC);
    }
}

Related

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2. formatMM(Date date)
3. formatNanosTimeUSEastern(long nanos)
4. formatNewDate(String format)
5. formatOffset(int offset)
6. formatPrice(double price, String style)
7. formatRawDateTime(int unixtime)
8. formatRecyclingDate(String strDate)
9. formatRFC1123(Date date)