(Current time) Revise Programming Exercise 2.8 to display the hour using a 12-hour clock. Here is a sample run:

/*
(Current time) Revise Programming Exercise 2.8 to display the hour using a
12-hour clock. Here is a sample run:
*/
import java.util.Scanner;

public class Exercise_03_30 {
	public static void main(String[] args) {
		Scanner input = new Scanner(System.in); 	// Create a Scanner

		// Prompt user to enter the time offset of GMT
		System.out.print("Enter the time zone offset to GMT: ");
		int offset = input.nextInt();

		// Obtain the total milliseconds since midnight, Jan 1, 1970
		long totalMilliseconds = System.currentTimeMillis();

		// Obtain the total seconds since midnight, Jan 1, 1970
		long totalSeconds = totalMilliseconds / 1000;

		// Compute the current second in the minute in the hour
		long currentSecond = totalSeconds % 60;

		// Obtain the total minutes
		long totalMinutes = totalSeconds / 60;

		// Compute the current minute in the hour
		long currentMinute = totalMinutes % 60;

		// Obtain the total hours
		long totalHours = totalMinutes / 60;

		// Compute the current hour
		long currentHour = totalHours % 24;
		currentHour = currentHour + offset;

		// Display results
		System.out.println(
			"Current time is " + ((currentHour > 12) ? currentHour - 12 : 
			currentHour) + ":" + currentMinute + ":" + currentSecond +
			((currentHour > 12) ? " PM" : " AM"));
	}
}