The toString() method of Duration Class in java.time package is used to get the String value of this duration. This String is in the ISO-8601 format.
Syntax:
public String toString()
Parameters: This method do not accepts any parameter.
Return Value: This method returns a String value which is the String value of this duration.
Below examples illustrate the Duration.toString() method:
Example 1:
// Java code to illustrate toString() method  import java.time.Duration;  public class GFG {    public static void main(String[] args)    {          // Duration using parse() method        Duration duration            = Duration.parse("P2DT3H4M");          // Get the String value        // using toString() method        System.out.println(duration1.toString());    }} |
Example 2:
// Java code to illustrate toString() method  import java.time.Duration;  public class GFG {    public static void main(String[] args)    {          // Duration using ofHours() method        Duration duration            = Duration.ofHours(5);          // Get the String value        // using toString() method        System.out.println(duration1.toString());    }} |
Reference: https://docs.oracle.com/javase/9/docs/api/java/time/Duration.html#toString–
