TimeZone inDaylightTime() method in Java with Examples

The inDaylightTime(Date) method of TimeZone class in Java is used to check and verify whether the given date is in daylight saving time.

Syntax:

public abstract boolean 
    inDaylightTime(Date date)

Parameters: The method takes one parameter date of Date type which is the given date to be verified.

Return Value: The method returns boolean True if the passed date is ineffective with respect to the daylight saving time else the method return boolean False.

Below programs illustrate the use of inDaylightTime() Method in Java:
Example 1:

// Java code to demonstrate
// inDaylightTime() method

import java.util.*;

public class SimpleTimeZone_Demo {
    public static void main(String[] args)
    {
        // Creating a TimeZone
        TimeZone offtime_zone
            = TimeZone.getTimeZone("Europe/Rome");

        // Creating date object
        Date dt = new Date();

        // Verifying daylight
        boolean bool_daylight
            = offtime_zone.inDaylightTime(dt);

        // Checking the value of day light
        System.out.println("Is it in day"
                           + " light saving time? "
                           + bool_daylight);
    }
}

Output:

Is it in day light saving time? true

Example 2:

// Java code to demonstrate
// inDaylightTime() method

import java.util.*;

public class SimpleTimeZone_Demo {
    public static void main(String[] args)
    {
        // Creating a TimeZone
        TimeZone offtime_zone
            = TimeZone.getTimeZone("Pacific/Pago_Pago");

        // Creating date object
        Date dt = new Date();

        // Verifying daylight
        boolean bool_daylight
            = offtime_zone.inDaylightTime(dt);

        // Checking the value of day light
        System.out.println("Is it in day"
                           + " light saving time? "
                           + bool_daylight);
    }
}

Output:

Is it in day light saving time? false

Reference: https://docs.oracle.com/javase/7/docs/api/java/util/TimeZone.html#inDaylightTime(java.util.Date)