Java: Get the current time in all the available time zones

Last update on March 13 2025 08:58:13 (UTC/GMT +8 hours)

Write a Java program to get the current time in all time zones.

Sample Solution:

Java Code:

import java.time.*;
public class Exercise21 {
   public static void main(String[] args)
    {
    ZoneId.SHORT_IDS.keySet().
    stream().forEach( 
    zoneKey ->System.out.println(" "+ ZoneId.of( ZoneId.SHORT_IDS.get( zoneKey ) ) +": "+ LocalDateTime.now(ZoneId.of(ZoneId.SHORT_IDS.get( zoneKey ) ) ) ) );
    }
}

Sample Output:

 Asia/Shanghai: 2017-06-20T20:43:19.642                                                                       
 Africa/Cairo: 2017-06-20T14:43:19.643                                                                        
 America/St_Johns: 2017-06-20T10:13:19.645                                                                    
 America/Puerto_Rico: 2017-06-20T08:43:19.647                                                                 
 America/Phoenix: 2017-06-20T05:43:19.647                                                                     
 Asia/Karachi: 2017-06-20T17:43:19.647                                                                        
 America/Anchorage: 2017-06-20T04:43:19.647                                                                   
 Asia/Dhaka: 2017-06-20T18:43:19.647                                                                          
 America/Chicago: 2017-06-20T07:43:19.648                                                                     
 -05:00: 2017-06-20T07:43:19.648                                                                              
 -10:00: 2017-06-20T02:43:19.648                                                                              
 Asia/Tokyo: 2017-06-20T21:43:19.649                                                                          
 Asia/Kolkata: 2017-06-20T18:13:19.649                                                                        
 America/Argentina/Buenos_Aires: 2017-06-20T09:43:19.649                                                      
 Pacific/Auckland: 2017-06-21T00:43:19.649                                                                    
 -07:00: 2017-06-20T05:43:19.649                                                                              
 Australia/Sydney: 2017-06-20T22:43:19.649                                                                    
 America/Sao_Paulo: 2017-06-20T09:43:19.650                                                                   
 America/Los_Angeles: 2017-06-20T05:43:19.650                                                                 
 Australia/Darwin: 2017-06-20T22:13:19.650                                                                    
 Pacific/Guadalcanal: 2017-06-20T23:43:19.650                                                                 
 Asia/Ho_Chi_Minh: 2017-06-20T19:43:19.650                                                                    
 Africa/Harare: 2017-06-20T14:43:19.650                                                                       
 Europe/Paris: 2017-06-20T14:43:19.651                                                                        
 Africa/Addis_Ababa: 2017-06-20T15:43:19.651                                                                  
 America/Indiana/Indianapolis: 2017-06-20T08:43:19.651                                                        
 Pacific/Apia: 2017-06-21T01:43:19.651                                                                        
 Asia/Yerevan: 2017-06-20T16:43:19.651            

N.B.: The result may varry for your system date and time.

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Java program to display the current time in multiple time zones including UTC, GMT, and PST.
• Write a Java program to iterate through available time zones and print the current time for each.
• Write a Java program to display the current time in all time zones within a specified region.
• Write a Java program to fetch and display current times for various time zones using the Java 8 Date/Time API.

Java Code Editor:

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