The isNegative() method of ChronoPeriod class in Java is used to check whether any of the three YEAR, MONTH, DAYS in period is negative or not.
Syntax:
boolean isNegative()
Parameters: This method does not accepts any parameter.
Return Value: This method returns True if any of the three-valued YEARs, MONTHS, DAYS for the given period is negative, else this will return false.
Below programs illustrate the isNegative() method in Java:
Program 1:
// Java code to show the function isNegative() // to check whether any of the three given units // YEAR, MONTH, DAY is negative import java.time.*;
import java.time.chrono.*;
import java.time.temporal.ChronoUnit;
public class ChronoPeriodDemo {
// Function to check if any of the three
// YEAR, MONTH, DAY is negative
static void ifNegative( int year, int months, int days)
{
ChronoPeriod period = Period.of(year, months, days);
System.out.println(period.isNegative());
}
// Driver Code
public static void main(String[] args)
{
int year = - 12 ;
int months = 3 ;
int days = 31 ;
ifNegative(year, months, days);
}
} |
Output:
true
Program 2:
// Java code to show the function isNegative() // to check whether any of the three given units // YEAR, MONTH, DAY is negative import java.time.*;
import java.time.chrono.*;
import java.time.temporal.ChronoUnit;
public class ChronoPeriodDemo {
// Function to check if any of the three
// YEAR, MONTH, DAY is negative
static void ifNegative( int year, int months, int days)
{
ChronoPeriod period = Period.of(year, months, days);
System.out.println(period.isNegative());
}
// Driver Code
public static void main(String[] args)
{
int year = 12 ;
int months = 3 ;
int days = 31 ;
ifNegative(year, months, days);
}
} |
Output:
false
Reference: https://docs.oracle.com/javase/9/docs/api/java/time/chrono/ChronoPeriod.html#isNegative–