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Quartz is the de facto standard of scheduling libraries for Java applications. Quartz supports running jobs at a particular time, repeating job executions, storing jobs in a database, and Spring integration. The easiest way to use Quartz in Spring applications is to use the `@Scheduled` annotation. For the Quartz application to work, you need to add a configuration with the @EnableScheduling annotation. The result will be a text output in the console every five seconds. To work with Quartz, it is not necessary to define a configuration.