With the new collection class methods, this has been simplified to.

如果使用新的集合类方法，上面的代码就被简化为。

youdao

This provides a warning any time you use an old-fashioned Collection class that holds objects.

每当您使用一个保存有对象的旧式collection类时就会产生一个警告。

youdao

No Collection class within java.util fulfills these requirements, but it's trivial to write one.

ut il中没有collection类能满足这些需求，但是编写一个这样的类很简单。

youdao

The Peggy Guggenheim Collection houses a first-class collection of 20th-century art from Dali to Duchamp in a beautiful white palazzo on the Grand Canal, and the Punta della Dogana, a contemporary art centre at the tip of Dorsoduro, contains the modern art collection of Francois Pinault, the CEO of Kering, which owns labels like Gucci and Saint Laurent.

BBC: Living in: Venice

The Vatican Observatory is located inside the palazzo, complete with a telescope and a world-class collection of meteorites.

NPR: Vatican Sends Message: Pope's Retirement For Real

Heavily endowed during the Great Depression it was able to amass a world-class collection at fire sale prices.

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