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Java Duration Class | equals() Method with Example

Duration Class equals() method: Here, we are going to learn about the equals() method of Duration Class with its syntax and example.
Submitted by Preeti Jain, on May 14, 2020

Duration Class equals() method

• equals() method is available in java.time package.
• equals() method is used to identifies whether this Duration and the given object are equal or not.
• equals() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
• equals() method does not throw an exception at the time of comparing two objects.

Syntax:

    public boolean equals(Duration d);

Parameter(s):

• Duration d – represents the object is to be compared to this object.

Return value:

The return type of this method is boolean, it returns true when both the compared objects are equal otherwise it returns false.

Example:

// Java program to demonstrate the example 
// of boolean equals(Duration d) method of Duration

import java.time.*;
import java.time.temporal.*;

public class EqualsOfDuration {
    public static void main(String args[]) {
        // Instantiates three Duration  objects
        Duration du1 = Duration.ofHours(2);
        Duration du2 = Duration.ofMinutes(2);
        Duration du3 = Duration.between(LocalTime.MIN, LocalTime.MAX);

        System.out.println("du1: " + du1);
        System.out.println("du2: " + du2);
        System.out.println("du3: " + du3);

        System.out.println();

        // compares this Duration object(du1)
        // to the given Duration object(du2) for
        // equality i.e here it returns false because
        // the value of du1<> du2
        boolean status = du1.equals(du2);
        System.out.println("du1.equals(du2): " + status);

        // compares this Duration object(du2)
        // to the given Duration object(du3) for
        // equality i.e here it returns false because
        // the value of du2 <> du3
        status = du2.equals(du3);
        System.out.println("du2.equals(du3): " + status);

        // compares this Duration object(du3)
        // to the given Duration object(du3) for
        // equality i.e here it returns true because
        // the value of du2 == du3
        status = du3.equals(du3);
        System.out.println("du3.equals(du3): " + status);
    }
}

Output

du1: PT2H
du2: PT2M
du3: PT23H59M59.999999999S

du1.equals(du2): false
du2.equals(du3): false
du3.equals(du3): true