OffsetDateTime isBefore() method in Java with examples

The isBefore() method of OffsetDateTime class in Java checks 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:

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// 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));
    }
}

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Output:

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

Program 2:

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// 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));
    }
}

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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)

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