utildatetime.java

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package com.jdev.util;

import java.util.*;
import java.text.*;
import java.util.Date;

/**
 * Utility class for handling java.util.Date, the java.sql data/time classes and related information
 *
 * @author     <a href="mailto:[e-mail]">David E. Jones</a>
 * @author     <a href="mailto:[e-mail]">Andy Zeneski</a>
 * @version    $Revision: 1.11 $
 * @since      2.0
 */
public class UtilDateTime {

    /** Return a Timestamp for right now
     * @return Timestamp for right now
     */
    public static java.sql.Timestamp nowTimestamp() {
        return new java.sql.Timestamp(System.currentTimeMillis());
    }

    /** Return a Date for right now
     * @return Date for right now
     */
    public static java.util.Date nowDate() {
        return new java.util.Date();
    }

    public static java.sql.Timestamp getDayStart(java.sql.Timestamp stamp) {
        return getDayStart(stamp, 0);
    }

    public static java.sql.Timestamp getDayStart(java.sql.Timestamp stamp, int daysLater) {
        Calendar tempCal = Calendar.getInstance();

        tempCal.setTime(new java.util.Date(stamp.getTime()));
        tempCal.set(tempCal.get(Calendar.YEAR), tempCal.get(Calendar.MONTH), tempCal.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
        tempCal.add(Calendar.DAY_OF_MONTH, daysLater);
        return new java.sql.Timestamp(tempCal.getTime().getTime());
    }

    public static java.sql.Timestamp getNextDayStart(java.sql.Timestamp stamp) {
        return getDayStart(stamp, 1);
    }

    public static java.sql.Timestamp getDayEnd(java.sql.Timestamp stamp) {
        return getDayEnd(stamp, 0);
    }

    public static java.sql.Timestamp getDayEnd(java.sql.Timestamp stamp, int daysLater) {
        Calendar tempCal = Calendar.getInstance();

        tempCal.setTime(new java.util.Date(stamp.getTime()));
        tempCal.set(tempCal.get(Calendar.YEAR), tempCal.get(Calendar.MONTH), tempCal.get(Calendar.DAY_OF_MONTH), 23, 59, 59);
        tempCal.add(Calendar.DAY_OF_MONTH, daysLater);
        return new java.sql.Timestamp(tempCal.getTime().getTime());
    }

    /** Converts a date String into a java.sql.Date
     * @param date The date String: MM/DD/YYYY
     * @return A java.sql.Date made from the date String
     */
    public static java.sql.Date toSqlDate(String date) {
        java.util.Date newDate = toDate(date, "00:00:00");

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

    /** Makes a java.sql.Date from separate Strings for month, day, year
     * @param monthStr The month String
     * @param dayStr The day String
     * @param yearStr The year String
     * @return A java.sql.Date made from separate Strings for month, day, year
     */
    public static java.sql.Date toSqlDate(String monthStr, String dayStr, String yearStr) {
        java.util.Date newDate = toDate(monthStr, dayStr, yearStr, "0", "0", "0");

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

    /** Makes a java.sql.Date from separate ints for month, day, year
     * @param month The month int
     * @param day The day int
     * @param year The year int
     * @return A java.sql.Date made from separate ints for month, day, year
     */
    public static java.sql.Date toSqlDate(int month, int day, int year) {
        java.util.Date newDate = toDate(month, day, year, 0, 0, 0);

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

    /** Converts a time String into a java.sql.Time
     * @param time The time String: either HH:MM or HH:MM:SS
     * @return A java.sql.Time made from the time String
     */
    public static java.sql.Time toSqlTime(String time) {
        java.util.Date newDate = toDate("1/1/1970", time);

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

    /** Makes a java.sql.Time from separate Strings for hour, minute, and second.
     * @param hourStr The hour String
     * @param minuteStr The minute String
     * @param secondStr The second String
     * @return A java.sql.Time made from separate Strings for hour, minute, and second.
     */
    public static java.sql.Time toSqlTime(String hourStr, String minuteStr, String secondStr) {
        java.util.Date newDate = toDate("0", "0", "0", hourStr, minuteStr, secondStr);

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

    /** Makes a java.sql.Time from separate ints for hour, minute, and second.
     * @param hour The hour int
     * @param minute The minute int
     * @param second The second int
     * @return A java.sql.Time made from separate ints for hour, minute, and second.
     */
    public static java.sql.Time toSqlTime(int hour, int minute, int second) {
        java.util.Date newDate = toDate(0, 0, 0, hour, minute, second);

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

    /** 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