date-format

validating a date using dateformat [duplicate]

眉间皱痕 提交于 2019-12-02 05:12:29
问题 This question already has answers here : Make SimpleDateFormat.parse() fail on invalid dates (e.g. month is greater than 12) (3 answers) Closed 11 months ago . I am trying to validate a date which is actually a string, trying to print it in yyyy/MM/dd format. Here is the code. String s="2012/12/0390990"; SimpleDateFormat ft = new SimpleDateFormat("yyyy/MM/dd"); System.out.println(ft.format(ft.parse(s))); and the output is 3083/05/30 . I want to have the validations too. No clue how to proceed

Manipulating dates in Javascript without the Date object

馋奶兔 提交于 2019-12-02 04:14:37
It appears I can't use the javascript Date object as it inherintly defaults to US dates when you initialise with a datestring. There is no way of passing any culture information to the date object I.e. No matter what the clients locale settings are var d = new Date("08/10/2009") will always create a date object representing the 10th August 2009 rather than the 8th October 2009 if the clients locale was the UK. So given that my requirement is to be able to add/subtract days/months/years easily is there a clever way of doing this easily without the Date object All i need to do is add a day to a

How do I parse a standard date into GMT?

限于喜欢 提交于 2019-12-02 03:14:12
Can someone show me a piece of java code that parses this date: 2009-08-05 INTO THIS GMT DATE: 2009/217:00:00 ==== what i have so far is: java.text.SimpleDateFormat format = new SimpleDateFormat("yyyy-mm-dd"); java.util.Calendar cal = Calendar.getInstance(new SimpleTimeZone(0, "GMT")); format.setCalendar(cal); java.util.Date date = format.parse(sdate); but its not working Tommy Here is the format you're looking for: Date date = new SimpleDateFormat("yyyy-MM-dd").parse("2009-08-05"); String parsedDate = new SimpleDateFormat("yyyy/D:HH:mm").format(date); format.setTimeZone(TimeZone.getTimeZone(

sqlite change date format of every cell in column

谁说我不能喝 提交于 2019-12-02 02:50:29
I have a table with a large number of rows. One column contains dates in the format '%m/%d/%Y' and I want to change all of them to format '%Y-%m-%d' the usual: update table set mydate = '6' doesn't work I guess because the date is always changing. How would I do that in this case? If the fields in the date string are properly padded with zeros, you can extract them as substrings : UPDATE MyTable SET MyDate = substr(MyDate, 7, 4) || '-' || substr(MyDate, 1, 2) || '-' || substr(MyDate, 4, 2) 来源: https://stackoverflow.com/questions/23125390/sqlite-change-date-format-of-every-cell-in-column

yyyy-MM-dd date format in Export to Excel

流过昼夜 提交于 2019-12-02 02:27:00
问题 Is there any way for getting date alone from UniversalSortableDateTimePattern using this in Export to Excel function. The Excel doesn't accepts the date format.. I need to display as yyyy-MM-dd. Any suggestions ll be helpful ? My code as dtASalesDrivers.Columns.Add(new System.Data.DataColumn("Start Date", typeof(String))); DateTime dt = Convert.ToDateTime(txtATrendStartDate.Text); drASalesDrivers[2] = string.Format("{0:yyyy-MM-dd}", dt); dtASalesDrivers.Rows.Add(drASalesDrivers); Edit :

yyyy-MM-dd date format in Export to Excel

允我心安 提交于 2019-12-02 01:24:56
Is there any way for getting date alone from UniversalSortableDateTimePattern using this in Export to Excel function. The Excel doesn't accepts the date format.. I need to display as yyyy-MM-dd. Any suggestions ll be helpful ? My code as dtASalesDrivers.Columns.Add(new System.Data.DataColumn("Start Date", typeof(String))); DateTime dt = Convert.ToDateTime(txtATrendStartDate.Text); drASalesDrivers[2] = string.Format("{0:yyyy-MM-dd}", dt); dtASalesDrivers.Rows.Add(drASalesDrivers); Edit : DateTime dt = Convert.ToDateTime(txtATrendStartDate.Text); drASalesDrivers[2] = string.Format("{0:u}", dt);

How do I convert date/time from one timezone to another?

妖精的绣舞 提交于 2019-12-01 23:50:49
Is it possible to convert date/time from EST (America/New_York) into UTC , given string in format yyyy-MM-dd HH:mm:ss ? Example: getUTCfromNY("2015-11-01 01:00:00", "NY"); should output: GMT Time: 2015-11-01 06:00:00 Edit Between the two results below, which one should you take? getUTCfromNY("2015-11-01 01:00:00", "NY") GMT Time: 2015-11-01 06 :00:00 getUTCfromNY("2015-11-01 01:00:00", "NY") GMT Time: 2015-11-01 05 :00:00 SimpleDateFormat#setTimezone() is the answer. One formatter with ETC timezone you use for parsing, another with UTC for producing output string: DateFormat dfNy = new

check & convert from a string to date vb.net

白昼怎懂夜的黑 提交于 2019-12-01 21:59:11
问题 I am a beginner in VB.NET & I am stuck at a very simple thing, Date formats. I am working on an application which uploads data from excel sheets into sql server database. The application will accept dates only if they are in mm/dd/yyyy format. It should reject all dates otherwise. Now i am struggling to check its format. Here is my code. Dim ROHSDate As String ROHSDate = Trim(filterString(holdingTank)) ... here i need to check if it is in mm/dd/yyyy format Please help. 回答1: Use DateTime

getting java.lang.IllegalArgumentException: Illegal pattern character 'o'? while parsing java.text.SimpleDateFormat

痴心易碎 提交于 2019-12-01 18:47:50
I wanted to convert from string to java.util.Date. for the same purpose I used following code, String timeStamp = "Mon Feb 14 18:15:39 IST 2011"; DateFormat formatter = new SimpleDateFormat("dow mon dd hh:mm:ss zzz yyyy"); Date ts = (Date)formatter.parse(timeStamp); The format given to SimpleDateFormat() is format of java.util.Date. When you convert util's Date to string it comes in this format('dow mon dd hh:mm:ss zzz yyyy'). But when I execute code, It gives me Exception. I Don't know what exactly I needed to do to get rid of this problem. I am posting the part of StackTrace of exception. If

Returning a date format from an unknown format of date string in java [duplicate]

主宰稳场 提交于 2019-12-01 18:10:51
Possible Duplicate: Parse any date in Java Suppose we have a string of date in a format (unknown to the user). Examples of acceptable dates that you can receive from a user: yyyy-MM-dd / yy-MM-dd yyyy/MM/dd / yy/MM/dd dd/MM/yyyy / dd/MM/yy MM/dd/yyyy / MM/dd/ yy` Is there a library that accept a date in a string and returns a date format that can be used by SimpleDateFormat or Joda Time? Thanks As a simple solution: I will apply each date format on the provided input to get a Date object , then I print the Date object with the same date format. If the input and the output for a date format are