Date-Time Extraction in Groovy

To extract information from a Date-Time field, we can use the Calendar class in combination with built-in time methods.

Assume we have a custom field of type date-time called DateTime_c. We want to extract the following:

• Year
• Month
• Day
• Hours
• Minutes
• Seconds
• Milliseconds

For year, month, and day, we use the built-in functions:

       
        int integerYear = year(DateTime_c);
        int integerMonth = month(DateTime_c);
        int integerDay = day(DateTime_c);
       
        

For hours, minutes, seconds, and milliseconds, we first instantiate the Calendar class:

       
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(DateTime_c);
        
        int integerHour = calendar.get(Calendar.HOUR_OF_DAY);
        int integerMinute = calendar.get(Calendar.MINUTE);
        int integerSeconds = calendar.get(Calendar.SECOND);
        int integerMilliseconds = calendar.get(Calendar.MILLISECOND);