In codenameone I have a picker p1 and I want to get the values of Month, Year and day separately from the date given by the user, this code
String m1=Integer.toString(p1.getDate().getMonth());
String d1=Integer.toString(p1.getDate().getDay());
String y1=Integer.toString(p1.getDate().getYear());
generates an error when running even if there is no compilation error.
Here is how I did it
Date d = p1.getDate();
Calendar c = Calendar.getInstance();
c.setTime(d);
String m1 = Integer.toString(c.get(Calendar.MONTH) + 1);
String y1 = Integer.toString(c.get(Calendar.YEAR));
String d1 = Integer.toString(c.get(Calendar.DAY_OF_MONTH));
Related
I am having a weird issue when I was reading dates from excel files in a react application. When I read it, it comes out as some form of float but what's weird is that it only does this for 1th to 12th date of the month from 13th till 31th is fine.
What I mean is that a date like 01-01-81 gets converted to 29587.00013888889
but 13-01-81 remains in its original.
I found this one solution from here How to read date from an excel file in JavaScript. But it does not give back the original value.
Really appreciate any kind of help. Cheers.
The problem was that excel has its own way for dates and we need to convert it, into the format we need.
This is the method I used
const ExcelDateToJSDate = (date) => {
let converted_date = new Date(Math.round((date - 25569) * 864e5));
converted_date = String(converted_date).slice(4, 15)
date = converted_date.split(" ")
let day = date[1];
let month = date[0];
month = "JanFebMarAprMayJunJulAugSepOctNovDec".indexOf(month) / 3 + 1
if (month.toString().length <= 1)
month = '0' + month
let year = date[2];
return String(day + '-' + month + '-' + year.slice(2, 4))
}
You can simply pass the excel date and change the function according to the date format you need.
I have these strings:
yy = "19";
mm = "05";
dd = "31";
These represent the creation date of a certain object in my project. This object expires after one month. How do I check if the object has expired already?
(I came across this solution but thought there might be another way to do it.)
UPDATE: the string date apparently represent the actual expiry date
I ended up using the date format "yymmdd" so I can convert it to type long and do a simple number comparison.
sprintf(buffer, "%s%s%s", yy, mm, dd);
expiryDate = atol(buffer);
// get current date of format "yymmdd" as well
// getCurrentDate() is my function that gets the date from my SDK
currentDate = getCurrentDate();
if(expiryDate >= currentDate)
{
// expired object!
}
Hi I am using Salesforce Apex,
I have a date as String as below. I need to add days to it using Apex.
String dateTime = '2017-07-08T23:59:59Z';
If I add one day to it then it should be 2017-07-09T23:59:59Z as string. How will I do this?
Thanks!
Beware the DST issue! The "addDays" function is not DST-aware, so if you step over a DST transition during the addition of days (in a time zone that has DST) then the time will be messed up.
To resolve this one split the date/time into separate date and time parts first, add the days to the date part then re-combine at the end, like:
DateTime dt = ...;
Integer days = ...;
Date d = dt.date().addDays(days);
Time t = dt.time();
dt = DateTime.newInstance(d, t);
If you are working in the UK (London) time zone the following anonymous Apex illustrates the issue nicely:
DateTime dt = DateTime.newInstance(2017, 10, 28, 23, 59, 59);
System.debug('Adding days directly: ' + dt.addDays(2));
Date d = dt.date().addDays(2);
Time t = dt.time();
dt = DateTime.newInstance(d, t);
System.debug('Adding days in parts: ' + dt);
You need to convert the string to a DateTime and then add days. You can format it back after
String stringDateTime = '2017-07-08T23:59:59Z';
DateTime dt = DateTime.valueOfGmt(stringDateTime);
DateTime tomorrow = dt.addDays(1);
DateTime nextMonth = dt.addMonths(1);
DateTime anniversary = dt.addYears(1);
String formattedDateTime = dt.format('yyyy-MM-dd\'T\'HH:mm:ss\'Z\'');
I want to calculate date difference between two dates with angular js. I used this code:
$scope.formatString = function(format) {
var year = parseInt(format.substring(0,5));
var month = parseInt(format.substring(6,8));
var day = parseInt(format.substring(9,10));
var date = new Date(year, month-1, day);
return date;
}
$scope.dayDiff = function(fromdate,todate){
var date2 = new Date($scope.formatString(fromdate));
var date1 = new Date($scope.formatString(todate));
var timeDiff = Math.abs(date2.getTime() - date1.getTime());
var diffDays = Math.ceil(timeDiff / (1000 * 3600 * 24));
return diffDays;
}
But it is right for within same month but it can't do right calculation between two dates in different months.
For example date1 = 2016.2.12, date2 = 2016.2.18 (Ok)
For example date1 = 2016.2.12, date2 = 2016.3.1 (It is not right)
Why not try using the String split function (docs) to parse your date, split will produce an array of the year, month, and day in that order based on the format you're inputting. From there you can reference the array pieces by index, a bit easier than trying to get your substring offsets lined up correctly:
$scope.formatString = function(format) {
var pieces = format.split('.'),
year = parseInt(pieces[0]),
month = parseInt(pieces[1]),
day = parseInt(pieces[2]),
date = new Date(year, month - 1, day);
return date;
}
Take a look at this working example: http://plnkr.co/edit/GgXjqA76IX5bzQEP56ux?p=preview
It is better to use a ready-made library. Because you do not know that in the future you will still need to work with dates. I recommend sugarjs.
The difference between the dates can be found in the following manner.
Date.range('2012.01.01', '2013.01.01').every('days').length
I've been given an excel document in which worktime information is noted, this document contains certain columns which are being read by using SSIS in visual studio, after that the information is writen to a Database.
The week and year column contain the week number and the year, the columns Monday up to Friday contain information about how many working hours have been spent on a certain task on that day of the week.
What I'd like to do is take the WeekNr, Year and Day and convert these into a date. I've been trying to accomplish this by using a script component that converts a day number, week number and year to a date but so far I haven't been able to get the day number from the columns. In my opinion it would work best if used with a start and end date taking the first and last date of that week.
So my question is if someone knows how to accomplish this, or if I should try a different approach.
The script component:
public override void Input0_ProcessInputRow(Input0Buffer Row, CultureInfo cultureInfo, int day )
{
DateTime firstDayOfYear = new DateTime(Int32.Parse(Row.Jaar), 1, 1);
int firstWeek = cultureInfo.Calendar.GetWeekOfYear(firstDayOfYear, cultureInfo.DateTimeFormat.CalendarWeekRule, cultureInfo.DateTimeFormat.FirstDayOfWeek);
int dayOffSet = day - (int)cultureInfo.DateTimeFormat.FirstDayOfWeek + 1;
Row.TaskDates = firstDayOfYear.AddDays((Int32.Parse(Row.Week) - (firstWeek + 1)) * 7 + dayOffSet + 1);
}
Based on this answer, I think you want something like the following. This result gives you Monday's date, so you can just AddDays based on the column day of the week.
DateTime jan1 = new DateTime(Int32.Parse(Row.Jaar), 1, 1);
int daysOffset = DayOfWeek.Monday - jan1.DayOfWeek;
DateTime firstMonday = jan1.AddDays(daysOffset);
var cal = CultureInfo.CurrentCulture.Calendar;
int firstWeek = cal.GetWeekOfYear(firstMonday, CalendarWeekRule.FirstFullWeek, DayOfWeek.Monday);
var weekNum = Int32.Parse(Row.Week);
if (firstWeek <= 1)
{
weekNum -= 1;
}
var mondaysDate = firstMonday.AddDays(weekNum * 7);
var tuesdaysDate = mondaysDate.AddDays(1);