Transaction中关于Override的相关代码是什么呢？

Transaction中关于Override的相关代码如下：

@Override  public void run(String...args)throws Exception
{ bookingService.book("Alice","Bob","Carol");
Assert.isTrue(bookingService.findAllBookings().size()==3;
"First booking should work with no problem");
logger.info("Alice,Bob and Carol have been booked"); 
try{ 
bookingService.book("Chris","Samuel");
}
catch(RuntimeException e)
{
 logger.info("v  The following exception is exprct because'Samuel' is too"+"big for the DB---v"); 
logger.error(e.getMessage());
}