MonthDay compareTo() method in Java with Examples

The compareTo() method of MonthDay class in Java compares this month-day to another month-day.

Syntax:

public int compareTo(MonthDay other)

Parameter: This method accepts a parameter other which specifies the other month-day to compare to and not null.



Returns: The function returns the comparator value. It can be negative if it is less or positive if it is greater.

Exceptions: The function throws an NullPointerException if the other is null.

Below programs illustrate the MonthDay.compareTo() method:

Program 1:

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// Program to illustrate the compareTo() method
  
import java.util.*;
import java.time.*;
  
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);
  
        // Parses the date
        MonthDay tm2 = MonthDay.parse("--12-06");
  
        // Uses the function
        LocalDate dt2 = tm2.atYear(2018);
  
        // Prints the date
        System.out.println(dt1.compareTo(dt2));
    }
}

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Output:

0

Program 2:

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// Program to illustrate the compareTo() method
  
import java.util.*;
import java.time.*;
  
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);
  
        // Parses the date
        MonthDay tm2 = MonthDay.parse("--12-06");
  
        // Uses the function
        LocalDate dt2 = tm2.atYear(2018);
  
        // Prints the date
        System.out.println(dt1.compareTo(dt2));
    }
}

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Output:

-2

Program 3:

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// Program to illustrate the compareTo() method
  
import java.util.*;
import java.time.*;
  
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);
  
        // Parses the date
        MonthDay tm2 = MonthDay.parse("--09-06");
  
        // Uses the function
        LocalDate dt2 = tm2.atYear(2018);
  
        // Prints the date
        System.out.println(dt1.compareTo(dt2));
    }
}

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Output:

1

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



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