The @Scheduled annotation in Spring allows you to use Spring Expression Language (SpEL) to define dynamic cron expressions, fixed rates, and delays.

Example

Spring bean using SpEL

package com.logicbig.example;

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

import java.time.LocalTime;

@Component
public class MyBean {

  @Scheduled(
          fixedDelayString = "#{T(com.logicbig.example.ScheduledExample).getTaskRate()}")
  public void runTask() {
      System.out.printf("Running scheduled task " +
                      " thread: %s, time: %s%n",
              Thread.currentThread().getName(),
              LocalTime.now());
  }
}

Main class

package com.logicbig.example;

import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableScheduling;

import java.util.TimeZone;

@ComponentScan
@EnableScheduling
@Configuration
public class ScheduledExample {

  public static void main(String[] args) {
      AnnotationConfigApplicationContext context =
              new AnnotationConfigApplicationContext(
                      ScheduledExample.class);

  }

  public static String getTaskRate(){
      TimeZone tz = TimeZone.getDefault();
      if(tz.getID().equals("America/New_York")){
          return "1000";
      }else{
          return "3000";
      }

  }
}

Output

Running scheduled task  thread: pool-1-thread-1, time: 16:08:41.937174200
Running scheduled task  thread: pool-1-thread-1, time: 16:08:44.944081800
Running scheduled task  thread: pool-1-thread-1, time: 16:08:47.950042600
Running scheduled task  thread: pool-1-thread-1, time: 16:08:50.956851800
......................

Example Project

Dependencies and Technologies Used:

• spring-context 6.2.12 (Spring Context)
   Version Compatibility: 4.3.0.RELEASE - 6.2.12Version List
  ×

  Version compatibilities of spring-context with this example:

  • 4.3.0.RELEASE
  • 4.3.1.RELEASE
  • 4.3.2.RELEASE
  • 4.3.3.RELEASE
  • 4.3.4.RELEASE
  • 4.3.5.RELEASE
  • 4.3.6.RELEASE
  • 4.3.7.RELEASE
  • 4.3.8.RELEASE
  • 4.3.9.RELEASE
  • 4.3.10.RELEASE
  • 4.3.11.RELEASE
  • 4.3.12.RELEASE
  • 4.3.13.RELEASE
  • 4.3.14.RELEASE
  • 4.3.15.RELEASE
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  • 4.3.18.RELEASE
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  • 4.3.30.RELEASE
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  • 5.1.0.RELEASE
  • 5.1.1.RELEASE
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  • 5.1.3.RELEASE
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  • 5.2.1.RELEASE
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  • 5.2.15.RELEASE
  • 5.2.16.RELEASE
  • 5.2.17.RELEASE
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  • 5.3.0
  • 5.3.1
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  • 5.3.6
  • 5.3.7
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  • 5.3.39
  Compatible Java Version: 17+
  • 6.0.0
  • 6.0.1
  • 6.0.2
  • 6.0.3
  • 6.0.4
  • 6.0.5
  • 6.0.6
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  • 6.2.1
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  • 6.2.5
  • 6.2.6
  • 6.2.7
  • 6.2.8
  • 6.2.9
  • 6.2.10
  • 6.2.11
  • 6.2.12

  Versions in green have been tested.

• JDK 25
• Maven 3.9.11