public class SimpleBean {
     public List<Object> constructObject() {
       List<Object> objects = new ArrayList<>();
       // construct objects
       return objects;
     }
}

@Override
public void configure() throws Exception {
    from("quartz expression")
            .log(LoggingLevel.INFO, LOGGER, "work started")
            .bean(simpleBean, "constructObjects")
            .marshal()
            .json(JsonLibrary.Jackson)
            .to("file:C:/data/export/JSON")
            .setHeader(Exchange.FILE_NAME, constant("test.json"))
            .log(LoggingLevel.INFO, LOGGER, "work completed");
}