Java 8 Format Date and Time Examples

Java 8 brought in the much-awaited Date & Time API (JEP 150) with the new java.time package with a whole new set of Date and Time classes, with the new class, also came a new way of formatting Date and Time, let us look at some examples,

Example: Get the current local date and time - Java 8

LocalDateTime localDateTime = LocalDateTime.now(); //ISO-8601: yyyy-MM-ddTHH:mm:ss.S
System.out.println(localDateTime);

2022-04-24T12:21:31.113921

As you can see when by default the date is printed in yyyy-MM-dd format and the time in HH:mm:ss.S format. You can make use of the DataTimeFormatter class from java.time.format package.

Example 1: Format Date in dd-MM-yyyy format - Java 8

DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("dd-MM-yyyy");
LocalDate localDate = LocalDate.now();
System.out.println(dateTimeFormatter.format(localDate));

Output: 24-04-2022

Example 2: Format Date in MM-dd-yy format - Java 8

DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("MM-dd-yy");
LocalDate localDate = LocalDate.now();
System.out.println(dateTimeFormatter.format(localDate));

Output: 04-24-22

Example 3: Format Date in dd-MMM-yyyy format - Java 8

DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("dd-MMM-yyyy");
LocalDate localDate = LocalDate.now();
System.out.println(dateTimeFormatter.format(localDate));

Output: 24-Apr-2022

Example 4: Format Date in dd, MMMM yyyy format - Java 8

DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("dd, MMMM yyyy");
LocalDate localDate = LocalDate.now();
System.out.println(dateTimeFormatter.format(localDate));

Output: 24, April 2022

Now let us see some examples of formatting LocalTime using DateTimeFormatter,

Example 1: Format Time in HH:mm format - Java 8

DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("HH:mm");
LocalTime localTime = LocalTime.now();
System.out.println(dateTimeFormatter.format(localTime));

Output: 12:24

Example 2: Format Time in HH:mm:ss format - Java 8

DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("HH:mm:ss");
LocalTime localTime = LocalTime.now();
System.out.println(dateTimeFormatter.format(localTime));

Output: 12:25:24

Finally, a few examples of formatting LocalDateTime class using DateTimeFormatter,

Example 1: Format DateTime in dd-MM-yyyy HH:mm:ss format - Java 8

DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("dd-MM-yyyy HH:mm:ss");
LocalDateTime localDateTime = LocalDateTime.now();
System.out.println(dateTimeFormatter.format(localDateTime));

Output: 24-04-2022 12:47:53

Example 2: Format DateTime in MM-dd-yyyy HH:mm format - Java 8

DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("MM-dd-yyyy HH:mm");
LocalDateTime localDateTime = LocalDateTime.now();
System.out.println(dateTimeFormatter.format(localDateTime));

Output: 04-24-2022 12:50

Read more: https://docs.oracle.com/javase/8/docs/api/java/time/format/DateTimeFormatter.html