Difference between Quartz Job and Scheduling Tasks with Spring?
Spring Scheduler is an abstraction layer written to hide the implementations of Executors in different JDKs like Java SE 1.4, Java SE 5 and Java EE environments, which have their own specific implementations.
Quartz Scheduler is a fully fledged scheduling framework which allows CRON based or Simple periodic task execution.
Spring Scheduler does provide integration with Quartz scheduler in the form of a Trigger to use the full functionality of the Quartz scheduler.
Advantage of using Spring Scheduler without directly using the Quartz Scheduler specific classes is that the abstraction layer provides flexibility and loose coupling.