Java Timestamp Field getDouble(Timestamp ts)

Description

Convert the timestamp to a double measured in seconds.

License

Apache License

Return

double representation of the timestamp, accurate to nanoseconds

Declaration

public static double getDouble(Timestamp ts) 

Method Source Code

//package com.java2s;
/**/* w w w.j ava 2  s.  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.sql.Timestamp;

public class Main {
    /**
     * Convert the timestamp to a double measured in seconds.
     * @return double representation of the timestamp, accurate to nanoseconds
     */
    public static double getDouble(Timestamp ts) {
        long seconds = millisToSeconds(ts.getTime());
        return seconds + ((double) ts.getNanos()) / 1000000000;
    }

    /**
     * Rounds the number of milliseconds relative to the epoch down to the nearest whole number of
     * seconds. 500 would round to 0, -500 would round to -1.
     */
    public static long millisToSeconds(long millis) {
        if (millis >= 0) {
            return millis / 1000;
        } else {
            return (millis - 999) / 1000;
        }
    }
}

Related

1. getDifferenceInHours(Timestamp startDateTime, Timestamp endDateTime)
2. getDiffSecond(long orgTimestamp, long desTimestamp)
3. getDiffTime(Timestamp last)
4. getDiffYear(java.sql.Timestamp start, java.sql.Timestamp end)
5. getDiscrepancyNum(Timestamp time1, Timestamp time2)
6. getDuration(final Timestamp start, final Date end)
7. getDurationHour(Timestamp time1, Timestamp time2, String direction)
8. getDurationMinute(Timestamp createTime, Timestamp finishTime)
9. getEndTimeOfMonth(Timestamp timestamp)