LocalDate format() method in Java

LocalDate format() method in Java

Last Updated : 28 Nov, 2018

The format() method of LocalDate class 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 LocalDate in Java: Program 1:

Java

// Program to illustrate the format() method

import java.util.*;
import java.time.*;
import java.time.format.DateTimeFormatter;

public class GfG {
    public static void main(String[] args)
    {

        // Parses the date
        LocalDate 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.

Java

// Program to illustrate the format() method
// Exception Program

import java.util.*;
import java.time.*;
import java.time.format.DateTimeFormatter;

public class GfG {
    public static void main(String[] args)
    {
        try {
            // Parses the date
            LocalDate 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

Reference: https://docs.oracle.com/javase/10/docs/api/java/time/LocalDate.html#format(java.time.format.DateTimeFormatter)

LocalDate format() method in Java

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