The toHours() method of Duration Class in java.time package is used get the value of this duration in number of hours.
Syntax:
public long toHours()
Parameters: This method do not accepts any parameter.
Return Value: This method returns a long value which is the number of hours in this duration.
Below examples illustrate the Duration.toHours() method:
Example 1:
// Java code to illustrate toHours() method  import java.time.Duration;  public class GFG {    public static void main(String[] args)    {          // Duration using parse() method        Duration duration            = Duration.parse("P2DT3H4M");          System.out.println("Duration: "                           + duration);          // Get the number of hours        // using toHours() method        System.out.println(duration.toHours());    }} |
Output:
Duration: PT51H4M 51
Example 2:
// Java code to illustrate toHours() method  import java.time.Duration;  public class GFG {    public static void main(String[] args)    {          // Duration using ofHours() method        Duration duration            = Duration.ofHours(10);          System.out.println("Duration: "                           + duration);          // Get the number of hours        // using toHours() method        System.out.println(duration.toHours());    }} |
Output:
Duration: PT10H 10
Reference: https://docs.oracle.com/javase/9/docs/api/java/time/Duration.html#toHours–
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