MonthDay format() method in Java with Examples

The format() method of MonthDay class in Java formats this month-day using the specified formatter.

Syntax:

public String format(DateTimeFormatter formatter)

Parameter: This method accepts a parameter formatter which specifies the formatter to use and it is not null.

Returns: The function returns the formatted date string and not null.

Below programs illustrate the MonthDay.format() method:



Program 1:

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// 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
        MonthDay tm1 = MonthDay.parse("--12-06");
  
        // Uses the function
        LocalDate dt1 = tm1.atYear(2018);
  
        DateTimeFormatter formatter
            = DateTimeFormatter
                  .ofPattern("YYYY-MM-dd");
  
        System.out.println(formatter.format(dt1));
    }
}

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Output:

2018-12-06

Program 2:

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// 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
        MonthDay tm1 = MonthDay.parse("--10-06");
  
        // Uses the function
        LocalDate dt1 = tm1.atYear(2018);
  
        DateTimeFormatter formatter
            = DateTimeFormatter
                  .ofPattern("--MM-dd");
  
        System.out.println(formatter.format(dt1));
    }
}

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Output:

--10-06

Reference: https://docs.oracle.com/javase/8/docs/api/java/time/MonthDay.html#format-java.time.format.DateTimeFormatter-

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