OOO Cron framework in the Java library
The OOO CRON framework is a Lightweight task scheduling framework based on Java, which is used to perform repetitive tasks at the scheduled time interval.This framework provides a simple and easy -to -use API that can easily create, schedule and manage tasks.
Application scenario:
1. Timing task: The OOO CRON framework can be used to perform specific tasks regularly.For example, automatically backup the database every morning every morning, and clean up temporary documents every hour.Below is an example of using the OOO CRON framework to implement timing tasks:
import ooocron.*;
public class BackupTask implements CronTask {
public void execute() {
// Execute backup operation
System.out.println ("Database backup is successful!"););
}
}
public class Main {
public static void main(String[] args) {
CronScheduler scheduler = new CronScheduler();
// Create a fixed -time task
CronTask task = new BackupTask();
// Perform at 1 am every day
CronExpression expression = new CronExpression("0 0 1 * * ?");
// Add task to scheduler
scheduler.scheduleTask(task, expression);
// Start scheduler
scheduler.start();
}
}
2. Delay task: The OOO CRON framework can also be used to perform delay tasks.For example, send reminder emails after a period of time, or perform certain operations at a specific date time.Below is an example of using the OOO CRON framework to implement delay tasks:
import ooocron.*;
public class ReminderTask implements CronTask {
public void execute() {
// Send reminder email
System.out.println ("Remind the mail to send success!");
}
}
public class Main {
public static void main(String[] args) {
CronScheduler scheduler = new CronScheduler();
// Create a delayed task
CronTask task = new ReminderTask();
// After 10 minutes, execute
Date startTime = new Date(System.currentTimeMillis() + 10 * 60 * 1000);
// Add task to scheduler
scheduler.scheduleTask(task, startTime);
// Start scheduler
scheduler.start();
}
}
3. Dynamic task scheduling: The OOO CRON framework allows dynamically adding, modified, and deleting tasks. You can dynamically adjust the scheduling time of the task or cancel the task that does not need to be performed.This provides applications with greater flexibility and scalability.
Summarize:
The OOO CRON framework provides a simple and easy -to -use API, which can be used to achieve task scheduling function in Java applications.Whether it is timing task or delayed task, the framework can be implemented.Through this framework, users can easily create, schedule and manage tasks to improve the efficiency and reliability of applications.