public class FriendlyThrowsAdvice implements ThrowsAdvice {    public void afterThrowing(ApplicationException ex) throws Throwable {            System.out.println(ex.getClass().getName() + "例外が発生しました。[" + ex.getMessage() + "]");       throw ex;    }    public void afterThrowing(Method m, Object[] args, Object target, DataIntegrityViolationException ex)       throws Throwable {            DuplicateKeyException exception = new DuplicateKeyException("すでに登録済みです。", ex);       System.out.println(target.getClass() + "." + m.getName() + "でデータアクセス例外が発生しました。["      + exception.getMessage() + "]");       throw exception;    } }