import org.springframework.scheduling.support.CronSequenceGenerator;

import java.time.Instant;
import java.util.Date;

public class Main {
  public static void main(String[] args) {
    CronSequenceGenerator generator = new CronSequenceGenerator("0 0 * * * *");
    Date now = Date.from(Instant.now());
    for (int i = 0 ; i < 5; i++) {
      System.out.println(generator.next(now));
      now = generator.next(now);
    }
  }
}