Java SimpleTimeZone inDaylightTime() Method

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Description

The Java SimpleTimeZone inDaylightTime(Date date) method is used to query if the given date is in daylight saving time.

Declaration

Following is the declaration for java.util.SimpleTimeZone.inDaylightTime() method.

public boolean inDaylightTime(Date date)

Parameters

date − This is the given Date.

Return Value

The method call returns 'true' if daylight saving time is in effective at the given date; false otherwise.

Exception

NA

Checking a SimpleTimeZone of GMT Timezone If is in Daylight Saving Time

The following example shows the usage of Java SimpleTimeZone inDaylightTime(Date) method to check if a given date is in daylight saving time. We've created a SimpleTimeZone using GMT and a date using Date object with current time. Then we've checked date being in daylight savings using inDaylightTime() ethod and printed the status.

package com.tutorialspoint;

import java.time.Instant;
import java.util.Date;
import java.util.SimpleTimeZone;

public class SimpleTimeZoneDemo {
   public static void main( String args[] ) {
      
      // create simple time zone object     
      SimpleTimeZone stobj1 = new SimpleTimeZone(820,"GMT");

      // create date
      Date date = Date.from(Instant.now());

      // check day light
      boolean daylight = stobj1.inDaylightTime(date); 

      // checking the value of day light      
      System.out.println("Is in day light : " + daylight);
   }     
}

Output

Let us compile and run the above program, this will produce the following result.

Is in day light : false

Checking a SimpleTimeZone of US Timezone If is in Daylight Saving Time

The following example shows the usage of Java SimpleTimeZone inDaylightTime(Date) method to check if a given date is in daylight saving time. We've created a SimpleTimeZone using US and a date using Date object with current time. Then we've checked date being in daylight savings using inDaylightTime() ethod and printed the status.

package com.tutorialspoint;

import java.time.Instant;
import java.util.Date;
import java.util.SimpleTimeZone;

public class SimpleTimeZoneDemo {
   public static void main( String args[] ) {
      
      // create simple time zone object     
      SimpleTimeZone stobj1 = new SimpleTimeZone(820,"US");

      // create date
      Date date = Date.from(Instant.now());

      // check day light
      boolean daylight = stobj1.inDaylightTime(date); 

      // checking the value of day light      
      System.out.println("Is in day light : " + daylight);
   }     
}

Output

Let us compile and run the above program, this will produce the following result.

Is in day light : false

Checking a SimpleTimeZone of BST Timezone If is in Daylight Saving Time

The following example shows the usage of Java SimpleTimeZone inDaylightTime(Date) method to check if a given date is in daylight saving time. We've created a SimpleTimeZone using BST and a date using Date object with current time. Then we've checked date being in daylight savings using inDaylightTime() ethod and printed the status.

package com.tutorialspoint;

import java.time.Instant;
import java.util.Date;
import java.util.SimpleTimeZone;

public class SimpleTimeZoneDemo {
   public static void main( String args[] ) {
      
      // create simple time zone object     
      SimpleTimeZone stobj1 = new SimpleTimeZone(820,"BST");

      // create date
      Date date = Date.from(Instant.now());

      // check day light
      boolean daylight = stobj1.inDaylightTime(date); 

      // checking the value of day light      
      System.out.println("Is in day light : " + daylight);
   }     
}

Output

Let us compile and run the above program, this will produce the following result.

Is in day light : false