:音像店的出租电影业务，在实际应用中，可能会通过以下方式查找需要的电影:

通过标题(title)查找电影；

可将电影分成不同的类型(type)，如喜剧片、悲剧片、战斗片等。因此在进行出租时，可在某一特定的类型中查找电影；

查找包括某一演员(actor/actress)的电影。

如果使用向量(Vector/ArrayList)来存储所有的电影，在查找的时候很浪费时间；

使用HashTable对电影进行有效存储，使得在需要时能够很快找到。

-: Rent the movie business video store, in practical applications, it may be required in the following ways to find movie: Find movies by title (title)　film can be divided into different types (type), such as comedy, tragedy pieces, combat tablets. Therefore, when making rental, you can find a movie in a particular type　find include a actor (actor/actress) movies. If you use the vector (Vector/ArrayList) to store all the movies, when looking for a waste of time　using HashTable effective storage of the film, so that when the need to be able to quickly find.