ChronoLocalDate compareTo() method in Java with Examples

The compareTo() method of ChronoLocalDate interface in Java method compares this date to another date.

Syntax:

public int compareTo(ChronoLocalDate other)

Parameter: This method accepts a parameter other which specifies the other date to compare to and it is not specifically null.



Return Value: It returns the comparator value which is negative if it is less else it is positive if it is greater.

Below programs illustrate the compareTo() method of ChronoLocalDate in Java:

Program 1:

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// Program to illustrate the compareTo() method
  
import java.util.*;
import java.time.*;
import java.time.chrono.*;
  
public class GfG {
    public static void main(String[] args)
    {
        // First date
        ChronoLocalDate dt
            = LocalDate.parse("2018-11-01");
  
        System.out.println(dt);
  
        // Second date
        ChronoLocalDate dt1
            = LocalDate.parse("2018-11-14");
  
        System.out.println(dt1);
  
        // Compare both dates
        System.out.println(dt1.compareTo(dt));
    }
}

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Output:

2018-11-01
2018-11-14
13

Program 2:

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// Program to illustrate the compareTo() method
  
import java.util.*;
import java.time.*;
import java.time.chrono.*;
  
public class GfG {
    public static void main(String[] args)
    {
        // First date
        ChronoLocalDate dt
            = LocalDate.parse("2018-11-21");
        System.out.println(dt);
  
        // Second date
        ChronoLocalDate dt1
            = LocalDate.parse("2018-11-14");
        System.out.println(dt1);
  
        // Compare both dates
        System.out.println(dt1.compareTo(dt));
    }
}

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Output:

2018-11-21
2018-11-14
-7

Reference: https://docs.oracle.com/javase/9/docs/api/java/time/chrono/ChronoLocalDate.html#compareTo-java.time.chrono.ChronoLocalDate-



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