Convert String into formated date

dou 06/12/2018. 2 answers, 247 views
apex date datetime

I have a string like this :


that is supposed to be a date.

I need to convert it into a date like that :


How can I do that ? I tried a lot of things like converting it into a datetime and trying to format it like 'yyyy-MM-dd' but I always got this error when I run the code :

System.TypeException: Invalid date/time: 10/12/1990

2 Answers

Pranay Jaiswal 06/12/2018.

Why not do it yourself using String split?

    String myDate ='10/12/1990';
List<String> arrayDate = myDate.split('/');
String newDateFormat = arrayDate[2]+'-'+arrayDate[1]+'-'+arrayDate[0];


David Reed 06/12/2018.

If you're located in an org that uses the MM/DD/YYYY date format, the Date.parse() method will do the hard work for you to convert your string into a Date instance. Then, you can use DateTime.format() to render the output format you desire. (Oddly, DateTime has more functionality than Date for this purpose).

Date myDate = Date.parse('10/12/1990');
    DateTime.newInstance(myDate, Time.newInstance(0, 0, 0, 0)).format('YYYY-MM-dd')

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