YearMonth format() method in Java

The format() method of YearMonth class in Java is used to format this YearMonth instance according to a specified DateTimeFormatter for year-month passed as parameter to this method.

Syntax:

public String format(DateTimeFormatter formatter)

Parameter: This method accepts a single parameter formatter which is the DateTimeFormatter according to which this YearMonth instance will be formatted.
Return Value: It returns the value of this YearMonth as a string after formatting it according to the specified formatter.
Below programs illustrate the format() method of YearMonth 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)

    {
 
        // Create a YearMonth object

        YearMonth thisYearMonth = YearMonth.of(2017, 8);
 
        // Create a DateTimeFormatter string

        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yy/MM");
 
        // Format this year-month

        System.out.println(thisYearMonth.format(formatter));

    }
}

Output:

17/08

Program 2:

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)

    {
 
        // Create a YearMonth object

        YearMonth thisYearMonth = YearMonth.of(2018, 5);
 
        // Create a DateTimeFormatter string

        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("MM/yy");
 
        // Format this year-month

        System.out.println(thisYearMonth.format(formatter));

    }
}