Java Timestamp Parse parseTimestamp2Long(String datestring, String datepattern, TimeZone timeZone)

Description

parse date string with a given date pattern, return long type timestamp, unit:second precondition: it is better to call cubridmanager.CommonTool.validateTimestamp(String, String) first to void throwing an ParseException

License

Open Source License

Parameter

Parameter	Description
datestring	String date string eg: 2009-02-20 16:42:46
datepattern	String date pattern eg: yyyy-MM-dd HH:mm:ss
timeZone	TimeZone if null ,the default will be GMT

Exception

Parameter	Description
ParseException	e

Return

long timestamp

Declaration

private static long parseTimestamp2Long(String datestring,
        String datepattern, TimeZone timeZone) throws ParseException

Method Source Code

//package com.java2s;
import java.text.DateFormat;
import java.text.ParseException;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;

public class Main {
    /**/*from   w  ww.j  av a  2  s  . co  m*/
     * parse date string with a given date pattern, return long type timestamp,
     * unit:second
     * 
     * precondition: it is better to call
     * cubridmanager.CommonTool.validateTimestamp(String, String) first to void
     * throwing an ParseException
     * 
     * @param datestring String date string eg: 2009-02-20 16:42:46
     * @param datepattern String date pattern eg: yyyy-MM-dd HH:mm:ss
     * @param timeZone TimeZone if null ,the default will be GMT
     * @return long timestamp
     * @throws ParseException e
     */
    private static long parseTimestamp2Long(String datestring,
            String datepattern, TimeZone timeZone) throws ParseException {
        DateFormat formatter = getDateFormat(datepattern, Locale.US,
                timeZone);
        Date date = formatter.parse(datestring);
        return date.getTime();
    }

    /**
     * return a standard DateFormat instance, which has a given Local, TimeZone,
     * and with a strict check
     * 
     * @param datepattern String
     * @param locale Locale
     * @param timeZone TimeZone
     * @return DateFormat
     */
    public static DateFormat getDateFormat(String datepattern,
            Locale locale, TimeZone timeZone) {
        DateFormat formatter = new SimpleDateFormat(datepattern, locale);
        formatter.setLenient(false);
        if (timeZone == null) {
            formatter.setTimeZone(TimeZone.getTimeZone("GMT"));
        } else {
            formatter.setTimeZone(timeZone);
        }
        return formatter;
    }
}