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Want to run a task every day at 8 AM using Spring Boot? Just use the @Scheduled annotation with the right cron expression:

📅 0 0 8 * * * – this means "at 8:00 AM every day".

✅ Step-by-Step Guide

1️⃣ Enable Scheduling

Add @EnableScheduling in your main application class:

java

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.scheduling.annotation.EnableScheduling;

@SpringBootApplication
@EnableScheduling
public class SchedulerExampleApplication {

    public static void main(String[] args) {
        SpringApplication.run(SchedulerExampleApplication.class, args);
    }
}

2️⃣ Create the Daily Scheduled Task

java

import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

import java.time.LocalDateTime;

@Component
public class DailyScheduledTask {

    // Runs every day at 8 AM
    @Scheduled(cron = "0 0 8 * * *")
    public void scheduleTaskAtEightAM() {
        System.out.println("Task running at 8 AM: " + LocalDateTime.now());
    }
}

🧠 Cron Breakdown

Here’s what 0 0 8 * * * means:

sql

| Field        | Value | Description              |
|--------------|-------|--------------------------|
| Seconds      | 0     | At the 0th second        |
| Minutes      | 0     | At the 0th minute        |
| Hours        | 8     | At 8 AM                  |
| Day of month | *     | Every day                |
| Month        | *     | Every month              |
| Day of week  | *     | Any day (Mon–Sun)        |

🛠 Alternate Use Case: 4 PM on the 5th Day of the Month

If you need to run a task at 4 PM on the 5th day of every month, use:

java

@Scheduled(cron = "0 0 16 5 * *")
public void scheduleTaskOnFifthDayAtFourPM() {
    System.out.println("Task running at 4 PM on 5th: " + LocalDateTime.now());
}

🔄 Timezone Support (Optional)

To make it timezone-specific:

java

@Scheduled(cron = "0 0 8 * * *", zone = "America/Toronto")

✅ Summary

• ✔️ Use @EnableScheduling in your app.
• 🕗 Use @Scheduled(cron = "0 0 8 * * *") for 8 AM daily.
• 📅 Customize further using other cron expressions.
• 🌍 Add a zone parameter for timezone awareness.