Java SQL Time From getDateTimeStringFromCalendar(Calendar calendar)

Description

get Date Time String From Calendar

License

BSD License

Declaration

private static String getDateTimeStringFromCalendar(Calendar calendar) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright Duke Comprehensive Cancer Center and SemanticBits
 * //from  ww w.  ja va  2  s  . c  o m
 * Distributed under the OSI-approved BSD 3-Clause License.
 * See http://ncip.github.com/c3pr/LICENSE.txt for details.
 ******************************************************************************/

import java.sql.Time;

import java.util.Calendar;
import java.util.Date;

public class Main {
    public static final String DISPLAY_DATE_FORMAT = "MM/dd/yyyy";
    public static final String DISPLAY_DATE_TIME_FORMAT = "Day mm/dd/yyyy HH:MM:SS EDT";
    public static final String JDBC_DATE_ESCAPE_FORMAT = "yyyy-MM-dd";
    private static final String DISPLAY_DATE_DELIMITER = "/";
    private static final String ZONE = "EDT";
    private static String[] nameOfDay = { "0 no day", "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };

    private static String getDateTimeStringFromCalendar(Calendar calendar) {
        String dateString = nameOfDay[calendar.get(Calendar.DAY_OF_WEEK)] + " ";
        dateString += getDateAsString(calendar.get(Calendar.MONTH) + 1, calendar.get(Calendar.DATE),
                calendar.get(Calendar.YEAR));
        dateString += (" " + calendar.get(Calendar.HOUR_OF_DAY) + ":" + calendar.get(Calendar.MINUTE) + ":"
                + calendar.get(calendar.SECOND) + " " + ZONE);
        return dateString;
    }

    private static String getDateAsString(int month, int date, int year) {
        StringBuffer dateAsString = new StringBuffer();

        if (month > 9) {
            dateAsString.append(month);
        } else {
            dateAsString.append("0" + month);
        }
        dateAsString.append(DISPLAY_DATE_DELIMITER);
        if (date > 9) {
            dateAsString.append(date);
        } else {
            dateAsString.append("0" + date);
        }
        dateAsString.append(DISPLAY_DATE_DELIMITER).append(year);

        return dateAsString.toString();
    }

    /**
     * converts a java.sql.Date string with appropriate format
     * 
     * @param sqlDate
     *                java.sql.Date
     * @param format
     *                specifying the output format for the return string
     * @return formatted string
     */
    public static String toString(java.sql.Date sqlDate, String format) {
        // convert Date to String of the form "mm/dd/yyyy"
        if (DISPLAY_DATE_FORMAT.equalsIgnoreCase(format)) {
            Calendar calendar = Calendar.getInstance();
            calendar.setTime(sqlDate);
            return getDateAsString(calendar.get(Calendar.MONTH) + 1, calendar.get(Calendar.DATE),
                    calendar.get(Calendar.YEAR));
        }
        // convert Date to String of the form "mm/dd/yyyy HH:MM"
        else if (DISPLAY_DATE_TIME_FORMAT.equals(format)) {
            Calendar calendar = Calendar.getInstance();
            calendar.setTime(sqlDate);

            return getDateTimeStringFromCalendar(calendar);
        }
        // convert Date to String of the form "yyyy-mm-dd"
        else if (JDBC_DATE_ESCAPE_FORMAT.equalsIgnoreCase(format)) {
            return sqlDate.toString();
        }
        // default util.date to string convertion
        else {
            java.util.Date defaultDate = new java.util.Date(sqlDate.getTime());
            return defaultDate.toString();
        }
    }

    /**
     * converts a java.util.Date string with appropriate format
     * 
     * @param utilDate
     *                java.util.Date
     * @param format
     *                specifying the output format for the return string
     * @return formatted string if utilDate is not null
     */
    public static String toString(java.util.Date utilDate, String format) {
        if (utilDate == null) {
            return "";
        }

        // convert Date to String of the form "mm/dd/yyyy"
        if (DISPLAY_DATE_FORMAT.equalsIgnoreCase(format)) {
            Calendar calendar = Calendar.getInstance();
            calendar.setTime(utilDate);

            return getDateAsString(calendar.get(Calendar.MONTH) + 1, calendar.get(Calendar.DATE),
                    calendar.get(Calendar.YEAR));
        }
        // convert Date to String of the form "mm/dd/yyyy HH:MM"
        else if (DISPLAY_DATE_TIME_FORMAT.equals(format)) {
            Calendar calendar = Calendar.getInstance();
            calendar.setTime(utilDate);

            return getDateTimeStringFromCalendar(calendar);
        }
        // convert Date to String of the form "yyyy-mm-dd"
        else if (JDBC_DATE_ESCAPE_FORMAT.equalsIgnoreCase(format)) {
            java.sql.Date sqlDate = new java.sql.Date(utilDate.getTime());
            return sqlDate.toString();
        }
        // default util.date to string convertion
        else {
            return utilDate.toString();
        }
    }

    public static Time getTime(Date date) {
        return new Time(date.getTime());
    }
}

Related

1. getDateTimeFormat()
2. getDateTimeRtnTime(Date date, String time)
3. getDateTimeStr(Date date)
4. getDateTimeString(java.sql.Date dd)
5. getDateTimeString(String format)
6. getDateTimeTypeString(Connection conn)
7. getDateTimeTypeString(Connection conn)
8. toDateTime(final java.util.Date d)
9. toDatetime(long value)