The isZero() method of Duration Class in java.time package is used to check if this duration is of 0 length ot not. It returns a boolean value depicting the same.
Syntax:
public boolean isZero()
Parameters: This method do not accepts any parameter.
Return Value: This method returns a boolean value. If the length is of 0 length, then it returns true. Else it returns false.
Below examples illustrate the Duration.isZero() method:
Example 1:
// Java code to illustrate isZero() method  import java.time.Duration;  public class GFG {    public static void main(String[] args)    {          // Get the text        String time = "P2DT3H4M";          // Duration using parse() method        Duration duration = Duration.parse(time);          // Duration using isZero() method        boolean isZero = duration.isZero();          System.out.println(isZero);    }} |
Output:
false
Example 2:
// Java code to illustrate isZero() method  import java.time.Duration;import java.time.temporal.*;  public class GFG {    public static void main(String[] args)    {          // Get the text        String time = "P0DT0H0M";          // Duration using parse() method        Duration duration = Duration.parse(time);          // Duration using isZero() method        boolean isZero = duration.isZero();          System.out.println(isZero);    }} |
Output:
true
Reference: https://docs.oracle.com/javase/9/docs/api/java/time/Duration.html#isZero–
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