Duration plusHours(long) method in Java with Examples

The plusHours(long) method of Duration Class in java.time package is used to get an immutable copy of this duration with the specified number of hours added, passed as the parameter.

Syntax:

public Duration plusHours(long numberOfHours)

Parameters: This method accepts a parameter numberOfHours which is the number of hours to be added. It can be positive or negative but not null.

Return Value: This method returns a Duration which is an immutable copy of the existing duration with the parameter amount of hours added to it.

Exception: This method throws ArithmeticException if numeric overflow occurs.

Below examples illustrate the Duration.plusHours() method:

Example 1:

// Java code to illustrate plusHours() method

import java.time.Duration;

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

        // Duration 1 using parse() method
        Duration duration1
            = Duration.parse("P2DT3H4M");

        // Get the duration added
        // using plusHours() method
        System.out.println(duration1.plusHours(2));
    }
}

Output:

PT53H4M

Example 2:

// Java code to illustrate plusHours() method

import java.time.Duration;

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

        // Duration 1 using parse() method
        Duration duration1
            = Duration.parse("P0DT0H4M");

        // Get the duration added
        // using plusHours() method
        System.out.println(duration1.plusHours(5));
    }
}

Output:

PT5H4M

Reference: https://docs.oracle.com/javase/9/docs/api/java/time/Duration.html#plusHours-long-