cron expression parsing into java date

Question

• my database having 10 18 16 ? * SUN,MON,WED,FRI * cron expression then how to convert into Java date.
• how to comparing with present day time.
• and one more is how to compare to cron expressions i.e. 10 18 16 ? * SUN,MON,WED,FRI * and 0 30 9 30 * ?
• please explain the sample code using quartz or spring scheduling.

Answer 1

Please use:

import org.springframework.scheduling.support.CronSequenceGenerator;

final String cronExpression = "0 45 23 * * *";
final CronSequenceGenerator generator = new CronSequenceGenerator(cronExpression);
final Date nextExecutionDate = generator.next(new Date());

...and then I suggest use Joda DateTime for date comparison.