Scheduling jobs using Spring

import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import org.springframework.context.annotation.Configuration;

import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
import org.springframework.scheduling.support.CronTrigger;

@Configuration
public class ScheduleConfig {
 int shutdownTimeout = 1 * 60 * 1000;//1 minutes
 private final String cronExpression = "0 0 1 * * ?";//every hour

 public void start() {
  ThreadPoolTaskScheduler threadPoolTaskScheduler = threadPoolTaskScheduler();
  threadPoolTaskScheduler.initialize();
  threadPoolTaskScheduler.schedule((Runnable) task(), new CronTrigger(cronExpression));
 }

        public Runnable task() {
               //return the job to launch
        }

 public void stop() {
  ScheduledExecutorService scheduledExecutorService = threadPoolTaskScheduler().getScheduledExecutor();
  try {
   scheduledExecutorService.shutdownNow();
   if (!scheduledExecutorService.awaitTermination(shutdownTimeout, TimeUnit.SECONDS)) {
    LOG.debug("error during shutdown - did not terminate properly");
   }
  } catch (InterruptedException ie) {
   Thread.currentThread().interrupt();
  }
 }

 public ThreadPoolTaskScheduler threadPoolTaskScheduler() {
  ThreadPoolTaskScheduler threadPoolTaskScheduler = new ThreadPoolTaskScheduler();
  threadPoolTaskScheduler.setThreadNamePrefix("job");
  return threadPoolTaskScheduler;
 }
}