CrontabParser parser = new CrontabParser(); CronExpression expression = parser.parse("0 0 * * * ?"); Date nextExecutionTime = expression.getNextValidTimeAfter(new Date()); CronScheduler scheduler = new CronScheduler(); scheduler.schedule(() -> { }, "0 0 * * * ?"); CronManagementUI ui = new CronManagementUI(); ui.addTask(() -> { }, "0 0 * * * ?");