The format() method of ChronoLocalDate interface in Java method formats this date using the specified formatter.
Syntax:
public String format(DateTimeFormatter formatter)
Parameter: This method accepts a parameter obj which specifies the formatter to be used and it is not null.
Exceptions: The function throws only DateTimeException which occurs during an error in printing.
Return Value: It returns the formatted date string and not null.
Below programs illustrate the format() method of ChronoLocalDate in Java:
Program 1:
// Program to illustrate the format() method import java.util.*;import java.time.*;import java.time.chrono.*;import java.time.format.DateTimeFormatter; public class GfG { public static void main(String[] args) { // Parses the date ChronoLocalDate dt = LocalDate.parse("2018-11-01"); System.out.println(dt); // Function call DateTimeFormatter formatter = DateTimeFormatter .ofPattern("dd/MM/YYYY"); System.out.println(formatter.format(dt)); }} |
Output:
2018-11-01 01/11/2018
Program 2: To illustrate the exception.
// Program to illustrate the format() method// Exception Program import java.util.*;import java.time.*;import java.time.chrono.*;import java.time.format.DateTimeFormatter; public class GfG { public static void main(String[] args) { try { // Parses the date ChronoLocalDate dt = LocalDate.parse("2018-01-32"); System.out.println(dt); // Function call DateTimeFormatter formatter = DateTimeFormatter .ofPattern("dd/MM/YYYY"); System.out.println(formatter.format(dt)); } catch (Exception e) { System.out.println(e); } }} |
Output:
java.time.format.DateTimeParseException: Text '2018-01-32' could not be parsed: Invalid value for DayOfMonth (valid values 1 - 28/31): 32
