Java Format - Java printf Date/Time Format

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Java printf Date/time formatting deals with date, time, and datetime values.

Java printf Date/time formatting can be applied to format values of long, Long, java.util.Calendar, java.util.Date, and java.time.temporal.TemporalAccessor types.

The value in a long type is interpreted as the milliseconds passed since January 1, 1970 midnight UTC.

The t uppercase variant T conversion characters are used to format date/time values.

The general syntax for date/time formatting is as follows:

%<argument_index$><flags><width><conversion>

Precision is not applicable to date/time formatting.

For date/time formatting, the conversion is a two-character sequence. The first character is always 't' or 'T'. The second character, which is called the conversion suffix, determines the format of the date/time argument.

The following table contains the suffix characters for Time Formatting

The following table list of suffix characters for Date Formatting

The following table lists of Suffix Characters for Date/Time Formatting

Example

The following code shows how to use the date time formatter. It uses '<' flag in the format specifier to reuse the value from argument.

import java.time.LocalDateTime;
import java.time.Month;
import java.util.Locale;
//from w  w  w  . j  a  v  a 2 s. co m
public class Main {
  public static void main(String[] args) {
    Locale englishUS = Locale.US;
    LocalDateTime ldt = LocalDateTime.of(2014, Month.JANUARY, 25, 11, 48, 16);

    System.out.printf(englishUS, "US: %tB %<te,  %<tY  %<tT %<Tp%n", ldt);
  }
}

The code above generates the following result.

Example 2

The following code formats the current date and time in the default locale. It uses a ZonedDateTime argument that holds the current date/time with time zone.

import java.time.ZonedDateTime;
/*from  ww w .ja  v a 2  s.  c  o m*/
public class Main {
  public static void main(String[] args) {
    ZonedDateTime currentTime = ZonedDateTime.now();
    System.out.printf("%tA %<tB  %<te,  %<tY  %n", currentTime);
    System.out.printf("%TA %<TB  %<te,  %<tY  %n", currentTime);
    System.out.printf("%tD %n", currentTime);
    System.out.printf("%tF %n", currentTime);
    System.out.printf("%tc %n", currentTime);
    System.out.printf("%Tc %n", currentTime);
  }
}

The code above generates the following result.

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