The compareTo() method of ChronoLocalDateTime interface in Java method compares this date to another date.
Syntax:
default int compareTo(ChronoLocalDateTime 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 ChronoLocalDateTime in Java:
Program 1:
// 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 ChronoLocalDateTime dt = LocalDateTime.parse("2018-12-06T19:21:12"); System.out.println(dt); // Second date ChronoLocalDateTime dt1 = LocalDateTime.parse("2018-12-06T19:21:12"); System.out.println(dt1); try { // Compare both dates System.out.println(dt1.compareTo(dt)); } catch (Exception e) { System.out.println(e); } }} |
Output:
2018-12-06T19:21:12 2018-12-06T19:21:12 0
Program 2:
// 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 ChronoLocalDateTime dt = LocalDateTime.parse("2018-12-05T19:21:12"); System.out.println(dt); // Second date ChronoLocalDateTime dt1 = LocalDateTime.parse("2018-12-06T19:21:12"); System.out.println(dt1); try { // Compare both dates System.out.println(dt1.compareTo(dt)); } catch (Exception e) { System.out.println(e); } }} |
Output:
2018-12-05T19:21:12 2018-12-06T19:21:12 1
