OffsetDateTime isBefore() method in Java with examples

The isBefore() method of OffsetDateTime class in Java checks  if this date is before the specified date-time and returns true if it is. 

Syntax: 

public boolean isBefore(OffsetDateTime other)

Parameter: This method accepts a single parameter other which checks if this date-time is before the another date-time. 

Return Value: It returns true if this is before the other date-time, else it returns false. 

Below programs illustrate the isBefore() method: 

Program 1: 

Java

// Java program to demonstrate the isBefore() method

import java.time.OffsetDateTime;
import java.time.ZonedDateTime;

public class GFG {
    public static void main(String[] args)
    {

        // Parses the date1
        OffsetDateTime date1
            = OffsetDateTime
                  .parse("2018-11-12T13:30:30+05:00");

        // Parses the date2
        OffsetDateTime date2
            = OffsetDateTime
                  .parse("2018-12-12T13:30:30+05:00");

        // Prints both dates
        System.out.println("Date1: " + date1);
        System.out.println("Date2: " + date2);

        // Compare both
        System.out.println("Date1 before Date2? "
                           + date1.isBefore(date2));
    }
}

Output:

Date1: 2018-11-12T13:30:30+05:00
Date2: 2018-12-12T13:30:30+05:00
Date1 before Date2? true

Program 2: 

Java

// Java program to demonstrate the isBefore() method

import java.time.OffsetDateTime;
import java.time.ZonedDateTime;

public class GFG {
    public static void main(String[] args)
    {

        // Parses the date1
        OffsetDateTime date1
            = OffsetDateTime
                  .parse("2018-12-12T13:30:30+05:00");

        // Parses the date2
        OffsetDateTime date2
            = OffsetDateTime
                  .parse("2015-12-12T13:30:30+05:00");

        // Prints both dates
        System.out.println("Date1: " + date1);
        System.out.println("Date2: " + date2);

        // Compare both
        System.out.println("Date1 before Date2? "
                           + date1.isBefore(date2));
    }
}

Output:

Date1: 2018-12-12T13:30:30+05:00
Date2: 2015-12-12T13:30:30+05:00
Date1 before Date2? false

Reference: https://docs.oracle.com/javase/10/docs/api/java/time/OffsetDateTime.html#isBefore(java.time.OffsetDateTime)