alarm.java

import java.util.Timer;
import java.util.TimerTask;
import java.time.LocalDateTime;
import java.time.Duration;

public class AlarmClock {
    public static void main(String[] args) {
        // Set your alarm time here
        LocalDateTime alarmTime = LocalDateTime.of(2026, 4, 21, 18, 30);

        LocalDateTime now = LocalDateTime.now();
        long delay = Duration.between(now, alarmTime).toMillis();

        if (delay < 0) {
            System.out.println("Alarm time is in the past!");
            return;
        }

        Timer timer = new Timer();

        timer.schedule(new TimerTask() {
            @Override
            public void run() {
                System.out.println("⏰ Alarm ringing!");
                
                // Simple beep sound
                java.awt.Toolkit.getDefaultToolkit().beep();

                timer.cancel(); // stop timer after execution
            }
        }, delay);

        System.out.println("Alarm set for: " + alarmTime);
    }
}