How to Format Date and Time in the Java 8 Date/Time API

See Java: Tips and Tricks for similar articles.

Java 8 introduces a date and time formatter for use with the new date and time objects. The formatter permits you to build a pattern that can be applied to date time, date and time objects in order to display the object in a meaningful way. To learn how to format date and time objects in Java 8, follow these four steps.

  1. Open your text editor and create the Java program that will demonstrate formatting date and time. Type in the following Java statements:
    import java.time.*;
    import java.time.format.*;
    public class FormattingDateAndTime {
    	public static void main (String args[]) {
    		// Create a local date time object:
    		DateTimeFormatter formatToday=DateTimeFormatter.ofPattern("MM/dd/yy hh:mm:ss");
    		//String formattedToday=today.format(formatToday);
    		System.out.format("Formatted date time is %s\n", today.format(formatToday));
    		// Create a local time object:
    		DateTimeFormatter formatTimeNow=DateTimeFormatter.ofPattern("HH:mm:ss a");
    		System.out.format("Formatted current time is %s\n", timeNow.format(formatTimeNow));
    		// Create a local date object:
    		DateTimeFormatter formatDateToday=DateTimeFormatter.ofPattern("EEEE MMM dd ");
    		System.out.format("Formatted current date is %s\n" , dateToday.format(formatDateToday));	

    The DateTimeFormatter class can be used to format date/time objects. The ofPattern method specifies the pattern. The pattern consists of characters that have a special meaning to the formatter. For example, a pattern of MM indicates that a two-digit month number is to be displayed (e.g., the month number of February is "02"). Patterns like M can imply a numeric value or a text value. If you specify MMM then the text value of the month abbreviation will be generated (e.g., "Feb"). A specification of MMMM would generate the complete month name (e.g., "February"). The E pattern applies to weekday names. Coding E yields the first character of the weekday name (e.g., "W" for Wednesday). The EEE pattern results in the abbreviation of the weekday name (e.g., "Wed" for Wednesday). If you use EEEE then the weekday name (e.g., "Wednesday") is generated.

    For time patterns, use mm for two-digit minute and ss for two-digit second. The hh pattern generates the two-digit hour for a 12-hour clock (e.g., 6PM is "06") and HH generates the two-digit hour for a 24-hour clock (e.g., 6PM is "18"). The a requests "AM" (between midnight and noon) or "PM" (between noon and midnight).

  2. Save your file as
  3. Open a command prompt and navigate to the directory containing your new Java program. Then type in the command to compile the source and hit Enter.Compile Program with Formatted Date Time
  4. You are ready to test your Java program. Type in the command to run the Java runtime launcher and hit Enter. Notice the output shows the formatted values of the various date and time objects that you created.Run Program with Formatted Date Time Condition

Related Articles

  1. How to Check Object Type in Java
  2. How to Create a Jar File in Java
  3. How to Compile Packages in Java
  4. How to Throw an Exception in Java
  5. How to Create an Exception Class in Java
  6. How to Use the super Keyword to Call a Base Class Constructor in Java
  7. How to Use the Comparator.comparing Method in Java 8
  8. How to Use in Java
  9. How to Call an Interface Method in Java
  10. How to Add a Time Zone in the Java 8 Date/Time API
  11. How to Rethrow an Exception in Java
  12. How to Use the instanceof Operator with a Generic Class in Java
  13. How to Instantiate an Object in Java
  14. How to Filter Distinct Elements from a Collection in Java 8
  15. How to Create a Derived Class in Java
  16. How to Skip Elements with the Skip Method in Java 8
  17. How to Create a Java Bean
  18. How to Implement an Interface in Java
  19. How to Compare Two Objects with the equals Method in Java
  20. How to Set PATH from JAVA_HOME
  21. How to Prevent Race Conditions in Java 8
  22. How to Write a Block of Code in Java
  23. How to Display the Contents of a Directory in Java
  24. How to Group and Partition Collectors in Java 8
  25. How to Create a Reference to an Object in Java
  26. How to Reduce the Size of the Stream with the Limit Method in Java 8
  27. How to Write an Arithmetic Expression in Java
  28. How to Format Date and Time in the Java 8 Date/Time API (this article)
  29. How to Use Comparable and Comparator in Java
  30. How to Break a Loop in Java
  31. How to Use the this Keyword to Call Another Constructor in Java
  32. How to Write a Unit Test in Java
  33. How to Declare Variables in Java
  34. How to Override Base Class Methods with Derived Class Methods in Java
  35. How to Use Serialized Objects in Java
  36. How to Write Comments in Java
  37. How to Implement Functional Interfaces in Java 8
  38. How to Write Type Parameters with Multiple Bounds in Java
  39. How to Add Type and Repeating Annotations to Code in Java 8
  40. How to Use Basic Generics Syntax in Java
  41. How to Map Elements Using the Map Method in Java 8
  42. How to Work with Properties in Java
  43. How to Write while and do while Loops in Java
  44. How to Use the finally Block in Java
  45. How to Write for-each Loops in Java
  46. How to Create a Method in Java
  47. How to Continue a Loop in Java
  48. How to Handle Java Files with Streams
  49. How to Create an Interface Definition in Java
  50. How Default Base Class Constructors Are Used with Inheritance