Java: Print the current time in GMT

Last update on March 11 2025 11:04:37 (UTC/GMT +8 hours)

Display Current Time in GMT

Write a Java program that prints the current time in GMT.

GMT: Greenwich Mean Time (GMT) is the mean solar time at the Royal Observatory in Greenwich, London. GMT was formerly used as the international civil time standard, now superseded in that function by Coordinated Universal Time (UTC).

Test Data
Input the time zone offset to GMT: 256

Sample Solution:

Java Code:

import java.util.Scanner;
public class Exercise5 {

    public static void main(String[] Strings) {

        Scanner input = new Scanner(System.in);

        System.out.print("Input the time zone offset to GMT: ");
        long timeZoneChange = input.nextInt();

        long totalMilliseconds = System.currentTimeMillis();

        long totalSeconds = totalMilliseconds / 1000;

        long currentSecond = totalSeconds % 60;

        long totalMinutes = totalSeconds / 60;

        long currentMinute = totalMinutes % 60;

        long totalHours = totalMinutes / 60;

        long currentHour = ((totalHours + timeZoneChange) % 24);

        System.out.println("Current time is " + currentHour + ":" + currentMinute + ":" + currentSecond);
    }
}

Sample Output:

Input the time zone offset to GMT: 256                                                                        
Current time is 5:7:51 

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Java program to display the current GMT time and update it every second in the console using multithreading.
• Write a Java program to convert the current local time to GMT using the Java Time API and display both times side by side.
• Write a Java program to prompt the user for a timezone offset and display the corresponding GMT time after applying the offset.
• Write a Java program to format and display the current GMT time in ISO 8601 format along with milliseconds.

Java Code Editor :

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