The Category class includes the category name and the book's metadata in the form of the ArrayList.BookItem class, which contains the book's name, author, price, and category.

Category 类包含类别名以及以 ArrayList.BookItem 类形式表示的书籍的元数据，这些元数据包括书名、作者、价格和类别。

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Similarity of look has been cured — but now the market is flooded with more brands and nameplates than ever, giving consumers unprecedented choice in size, style and price category.

车形外观相似的问题早已解决——但如今的市场风起云涌，新品牌和新制造商层出不穷，各种车型、风格与价格选择，令消费者眼花缭乱。

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There is, admittedly, a growing category of inherently bullish investment funds that seek to track commodity-price indices, in which oil is usually the biggest component.

不可否认，一向看多不看空的基金确实是越来越多，这些基金在试图紧跟商品价格指数变化，而指数中石油价格通常占到最大的比重。

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Like all advanced Drobo innovations, this new data protection feature is fully automated, so all users can enjoy the data safety benefits traditionally reserved for large enterprise customers, and previously unattainable in this price category.

ENGADGET: Drobo's new 5N is a speedy $600 NAS for when you need files, stat

But versus, say, a Mazda Miata, the only other fun car in this price category, the New Beetle is loads more pragmatic, since you could legitimately take another passenger and still go buy a potted palm tree at the garden center.

FORBES: Test Drives

This final category competes more squarely on price and identified assortment, and some of these retailers have been doing well.

FORBES: Department Store Pricing -- No Easy Task (Part 4 Of 4)