Java Date Time API: LocalDateTime get(TemporalField field) examples

The get(TemporalField field) method from LocalDateTime can be used to get the value of the specified field from the current object as an integer. Let's take a look at some of the examples of how to use it,

LocalDateTime localDateTime = LocalDateTime.now(ZoneId.of("UTC"));
System.out.println("Current Date Time (UTC/GMT): " + localDateTime);

Current Date Time (UTC/GMT): 2022-05-14T09:27:38.319137

We have a LocalDateTime object in Zone UTC and now we are going to make use of the get(TemporalField field) methods over it to get various fields from it,

1. Get the Year

   int year = localDateTime.get(ChronoField.YEAR);
   System.out.println("Year : " + year);
   
   //Output: 2022

2. Get the Month of the Year

   int monthOfYear = localDateTime.get(ChronoField.MONTH_OF_YEAR);
   System.out.println("Day of the Month: " + monthOfYear);
   
   //Output: 5

3. Get the Day of the Month

   int monthOfYear = localDateTime.get(ChronoField.MONTH_OF_YEAR);
   System.out.println("Day of the Month: " + monthOfYear);
   
   //Output: 14

4. Get the Hour of the Day

   int hourOfDay = localDateTime.get(ChronoField.HOUR_OF_DAY);
   System.out.println("Hour of the Day : " + hourOfDay);
   
   //Output: 9

5. Get the Minutes of the Hour

   int minuteOfHour = localDateTime.get(ChronoField.MINUTE_OF_HOUR);
   System.out.println("Minute of the Hour : " + minuteOfHour);
   
   //Output: 27

6. Get the Seconds of the Minute

   int secondOfMinute = localDateTime.get(ChronoField.SECOND_OF_MINUTE);
   System.out.println("Second of the Minute : " + secondOfMinute);
   
   //Output: 38

7. Get the Seconds of the Minute

   int millSecOfSecond = localDateTime.get(ChronoField.MILLI_OF_SECOND);
           System.out.println("Mill-second of the Second : " + millSecOfSecond);
   
   //Output: 319137

Now let's look at some more fields that are not displayed as a part of the default LocalDateTime toString output,

1. Get the Seconds of the Day

   int secondOfDay = localDateTime.get(ChronoField.SECOND_OF_DAY);
   System.out.println("Seconds of Day : " + secondOfDay);
   
   //Output: 96024

2. Get the Day of the Year

   int dayOfYear = localDateTime.get(ChronoField.DAY_OF_YEAR);
   System.out.println("Day of the Year : " + dayOfYear);
   
   //Output: 134

3. Get the Seconds of the Minute

   int secondOfMinute = localDateTime.get(ChronoField.SECOND_OF_MINUTE);
   System.out.println("Second of the Minute : " + secondOfMinute);
   
   //Output: 38

4. Get the AM/PM of the Day

   //AM=0 PM=1
   int AmorPM = localDateTime.get(ChronoField.AMPM_OF_DAY);
   System.out.println(AmorPM);
   
   //Output: 0