Converts a System.currentTimeMillis() into a Timestamp - Java java.sql

Description

Converts a System.currentTimeMillis() into a Timestamp

Demo Code

//package com.java2s;

import java.util.Calendar;

public class Main {
    /**/*from  w  ww  .ja va  2  s.com*/
     * Converts a System.currentTimeMillis() into a Timestamp
     * @param now
     * @return
     */
    public static java.sql.Timestamp toTimestamp(long now) {
        return new java.sql.Timestamp(now);
    }

    /**
     * Converts a date and time String into a Timestamp
     * 
     * @param dateTime
     *            A combined data and time string in the format
     *            "MM/DD/YYYY HH:MM:SS", the seconds are optional
     * @return The corresponding Timestamp
     */
    public static java.sql.Timestamp toTimestamp(String dateTime) {
        java.util.Date newDate = toDate(dateTime);

        if (newDate != null)
            return new java.sql.Timestamp(newDate.getTime());
        else
            return null;
    }

    /**
     * Converts a date String and a time String into a Timestamp
     * 
     * @param date
     *            The date String: MM/DD/YYYY
     * @param time
     *            The time String: either HH:MM or HH:MM:SS
     * @return A Timestamp made from the date and time Strings
     */
    public static java.sql.Timestamp toTimestamp(String date, String time) {
        java.util.Date newDate = toDate(date, time);

        if (newDate != null)
            return new java.sql.Timestamp(newDate.getTime());
        else
            return null;
    }

    /**
     * Makes a Timestamp from separate Strings for month, day, year, hour,
     * minute, and second.
     * 
     * @param monthStr
     *            The month String
     * @param dayStr
     *            The day String
     * @param yearStr
     *            The year String
     * @param hourStr
     *            The hour String
     * @param minuteStr
     *            The minute String
     * @param secondStr
     *            The second String
     * @return A Timestamp made from separate Strings for month, day, year,
     *         hour, minute, and second.
     */
    public static java.sql.Timestamp toTimestamp(String monthStr,
            String dayStr, String yearStr, String hourStr,
            String minuteStr, String secondStr) {
        java.util.Date newDate = toDate(monthStr, dayStr, yearStr, hourStr,
                minuteStr, secondStr);

        if (newDate != null)
            return new java.sql.Timestamp(newDate.getTime());
        else
            return null;
    }

    /**
     * Makes a Timestamp from separate ints for month, day, year, hour, minute,
     * and second.
     * 
     * @param month
     *            The month int
     * @param day
     *            The day int
     * @param year
     *            The year int
     * @param hour
     *            The hour int
     * @param minute
     *            The minute int
     * @param second
     *            The second int
     * @return A Timestamp made from separate ints for month, day, year, hour,
     *         minute, and second.
     */
    public static java.sql.Timestamp toTimestamp(int month, int day,
            int year, int hour, int minute, int second) {
        java.util.Date newDate = toDate(month, day, year, hour, minute,
                second);

        if (newDate != null)
            return new java.sql.Timestamp(newDate.getTime());
        else
            return null;
    }

    /**
     * Converts a date and time String into a Date
     * 
     * @param dateTime
     *            A combined data and time string in the format
     *            "MM/DD/YYYY HH:MM:SS", the seconds are optional
     * @return The corresponding Date
     */
    public static java.util.Date toDate(String dateTime) {
        // dateTime must have one space between the date and time...
        String date = dateTime.substring(0, dateTime.indexOf(" "));
        String time = dateTime.substring(dateTime.indexOf(" ") + 1);

        return toDate(date, time);
    }

    /**
     * Converts a date String and a time String into a Date
     * 
     * @param date
     *            The date String: MM/DD/YYYY
     * @param time
     *            The time String: either HH:MM or HH:MM:SS
     * @return A Date made from the date and time Strings
     */
    public static java.util.Date toDate(String date, String time) {
        if (date == null || time == null)
            return null;
        String month;
        String day;
        String year;
        String hour;
        String minute;
        String second;

        int dateSlash1 = date.indexOf("/");
        int dateSlash2 = date.lastIndexOf("/");

        if (dateSlash1 <= 0 || dateSlash1 == dateSlash2)
            return null;
        int timeColon1 = time.indexOf(":");
        int timeColon2 = time.lastIndexOf(":");

        if (timeColon1 <= 0)
            return null;
        month = date.substring(0, dateSlash1);
        day = date.substring(dateSlash1 + 1, dateSlash2);
        year = date.substring(dateSlash2 + 1);
        hour = time.substring(0, timeColon1);

        if (timeColon1 == timeColon2) {
            minute = time.substring(timeColon1 + 1);
            second = "0";
        } else {
            minute = time.substring(timeColon1 + 1, timeColon2);
            second = time.substring(timeColon2 + 1);
        }

        return toDate(month, day, year, hour, minute, second);
    }

    /**
     * Makes a Date from separate Strings for month, day, year, hour, minute,
     * and second.
     * 
     * @param monthStr
     *            The month String
     * @param dayStr
     *            The day String
     * @param yearStr
     *            The year String
     * @param hourStr
     *            The hour String
     * @param minuteStr
     *            The minute String
     * @param secondStr
     *            The second String
     * @return A Date made from separate Strings for month, day, year, hour,
     *         minute, and second.
     */
    public static java.util.Date toDate(String monthStr, String dayStr,
            String yearStr, String hourStr, String minuteStr,
            String secondStr) {
        int month, day, year, hour, minute, second;

        try {
            month = Integer.parseInt(monthStr);
            day = Integer.parseInt(dayStr);
            year = Integer.parseInt(yearStr);
            hour = Integer.parseInt(hourStr);
            minute = Integer.parseInt(minuteStr);
            second = Integer.parseInt(secondStr);
        } catch (Exception e) {
            return null;
        }
        return toDate(month, day, year, hour, minute, second);
    }

    /**
     * Makes a Date from separate ints for month, day, year, hour, minute, and
     * second.
     * 
     * @param month
     *            The month int
     * @param day
     *            The day int
     * @param year
     *            The year int
     * @param hour
     *            The hour int
     * @param minute
     *            The minute int
     * @param second
     *            The second int
     * @return A Date made from separate ints for month, day, year, hour,
     *         minute, and second.
     */
    public static java.util.Date toDate(int month, int day, int year,
            int hour, int minute, int second) {
        Calendar calendar = Calendar.getInstance();

        try {
            calendar.set(year, month - 1, day, hour, minute, second);
        } catch (Exception e) {
            return null;
        }
        return new java.util.Date(calendar.getTime().getTime());
    }
}

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