OffsetTime compareTo() method in Java with examples

The compareTo() method of OffsetTime class in Java compares this time to another time and returns zero if they are equal or a positive or negative integer depending on the comparison result.

Syntax:

public int compareTo(OffsetTime other)

Parameter: This method accepts a single mandatory parameter other which specifies the other time which will be compared with.

Return Value: It returns the comparator value. It returns a negative value if the other date is less or a positive value if greater.

Exceptions: The function throws NullPointerException if the other date which is passed is null.



Below programs illustrate the compareTo() method:

Program 1 :

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// Java program to demonstrate the compareTo() method
  
import java.time.OffsetTime;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // Parses the time
        OffsetTime time1
            = OffsetTime.parse("15:30:30+07:00");
  
        // Parses the time
        OffsetTime time2
            = OffsetTime.parse("15:30:30+07:00");
  
        // gets the offset time1
        System.out.println("time1: "
                           + time1);
  
        // gets the offset time2
        System.out.println("time1: "
                           + time2);
  
        System.out.println("time1 when compared"
                           + " to time2 returns: "
                           + time1.compareTo(time2));
    }
}

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Output:

time1: 15:30:30+07:00
time1: 15:30:30+07:00
time1 when compared to time2 returns: 0

Program 2 :

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// Java program to demonstrate the compareTo() method
  
import java.time.OffsetTime;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // Parses the time
        OffsetTime time1
            = OffsetTime.parse("15:30:30+07:00");
  
        // Parses the time
        OffsetTime time2
            = OffsetTime.parse("12:10:30+07:00");
  
        // gets the offset time1
        System.out.println("time1: "
                           + time1);
  
        // gets the offset time2
        System.out.println("time1: "
                           + time2);
  
        System.out.println("time1 when compared"
                           + " to time2 returns: "
                           + time1.compareTo(time2));
    }
}

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Output:

time1: 15:30:30+07:00
time1: 12:10:30+07:00
time1 when compared to time2 returns: 1

Program 3: :

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// Java program to demonstrate the compareTo() method
  
import java.time.OffsetTime;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // Parses the time
        OffsetTime time1
            = OffsetTime.parse("15:30:30+07:00");
  
        // Parses the time
        OffsetTime time2
            = OffsetTime.parse("17:10:30+07:00");
  
        // gets the offset time1
        System.out.println("time1: "
                           + time1);
  
        // gets the offset time2
        System.out.println("time1: "
                           + time2);
  
        System.out.println("time1 when compared"
                           + " to time2 returns: "
                           + time1.compareTo(time2));
    }
}

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Output:

time1: 15:30:30+07:00
time1: 17:10:30+07:00
time1 when compared to time2 returns: -1

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

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