The isNegative() method of Duration Class in java.time package is used to check if this duration is negative or not. It returns a boolean value depicting the same.
Syntax:
public boolean isNegative()
Parameters: This method do not accepts any parameter.
Return Value: This method returns a boolean value. If the duration is negative, then it returns true. Else it returns false.
Below examples illustrate the Duration.isNegative() method:
Example 1:
// Java code to illustrate isNegative() 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 isNegative() method boolean isNegative = duration.isNegative(); System.out.println(isNegative); }} |
Output:
false
Example 2:
// Java code to illustrate isNegative() 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 isNegative() method boolean isNegative = duration.isNegative(); System.out.println(isNegative); }} |
Output:
true
Reference: https://docs.oracle.com/javase/9/docs/api/java/time/Duration.html#isNegative–
