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javastringdateformattinglocaldate

How to convert LocalDate from one format to another LocalDate format in java 8 without using String date?

LocalDate date = LocalDate.now();
System.out.println("date :" + date );//default format is yyyy-MM-dd
System.out.println(date.getClass().getName());//java.time.LocalDate

How to format the above date in LocalDate type with the format dd-MM-yyyy. But you can use String date pattern i.e dd-MM-yyyy. The output should be of LocalDate type only.

Solution

  • This feature is not a responsibility of LocalDate class which is an immutable date-time object that represents a date. Its duty is not to care about the String format representation.

    To generate or parse strings, use the DateTimeFormatter class. 

    DateTimeFormatter pattern = DateTimeFormatter.ofPattern("dd-MM-yyyy");
String string = date.format(pattern);

    Back to LocalDate, use the same pattern:

    LocalDate dateParsed = LocalDate.parse(string, pattern);

    But the new dateParsed will again be converted to its default String representation since LocalDate overrides toString() method. Here is what the documentation says:

    The output will be in the ISO-8601 format uuuu-MM-dd.

    You might want to implement your own decorator of this class which handles the formatting.