Java Parse Date parseDate(String datastr, String pattern)

Description

parse Date

License

Open Source License

Declaration

public static Date parseDate(String datastr, String pattern) 

Method Source Code

//package com.java2s;

import java.text.DateFormat;
import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.util.Date;

public class Main {
    private static final String DEF_DATE_FORMAT = "yyyy-MM-dd";
    private static final String DATE_FORMAT_1 = "yyyy/MM/dd";
    private static final String DATE_FORMAT_2 = "yyyyMMdd";
    private static final String DATE_FORMAT_3 = "MM/dd/yy";
    private static final String DATE_FORMAT_4 = "dd.MM.yy";
    private static final String DATE_FORMAT_5 = "yyyy-MM-dd HH:mm:ss";
    private static final String DATE_FORMAT_6 = "yyyy-MM-dd HH:mm";
    private static final String DATE_FORMAT_7 = "yyyy:MM:dd HH:mm:ss";
    private static final String DATE_FORMAT_8 = "yyyy:MM:dd HH:mm";
    private static final String DATE_FORMAT_9 = "yyyyMMdd HHmmss";
    private static final String DATE_FORMAT_10 = "yyyyMMdd HHmm";
    private static final String DATE_FORMAT_11 = "dd.MM.yy HH:mm";
    private static final String DATE_FORMAT_12 = "MM/dd/yy hh:mm a";
    private static final String DATE_FORMAT_13 = "yyyy:MM:dd HH:mm:sss";
    private static final String DATE_FORMAT_14 = "HH:mm:ss dd.MM.yyyy";

    public static Date parseDate(String datastr, String pattern) {
        try {/* w  w  w . ja v a2 s.  c  o m*/
            DateFormat parser = new SimpleDateFormat(pattern);
            return parser.parse(datastr);
        } catch (ParseException ex) {
            return null;
        }
    }

    public static Date parseDate(String datestr) {
        if (datestr == null || datestr.trim().equals(""))
            return null;
        String[] patterns = new String[15];
        patterns[0] = DEF_DATE_FORMAT;
        patterns[1] = DATE_FORMAT_1;
        patterns[2] = DATE_FORMAT_2;
        patterns[3] = DATE_FORMAT_3;
        patterns[4] = DATE_FORMAT_4;
        patterns[5] = DATE_FORMAT_5;
        patterns[6] = DATE_FORMAT_6;
        patterns[7] = DATE_FORMAT_7;
        patterns[8] = DATE_FORMAT_8;
        patterns[9] = DATE_FORMAT_9;
        patterns[10] = DATE_FORMAT_10;
        patterns[11] = DATE_FORMAT_11;
        patterns[12] = DATE_FORMAT_12;
        patterns[13] = DATE_FORMAT_13;
        patterns[14] = DATE_FORMAT_14;
        for (int i = 0; i < patterns.length; i++) {
            try {
                DateFormat parser = new SimpleDateFormat(patterns[i]);
                return parser.parse(datestr);
            } catch (ParseException ex) {
            }
        }

        return null;
    }
}

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