One of the bigger changes to the 5.0 Collections Framework is the addition of the new base interface Queue.
集合框架较大的一个改变就是添加了新的基接口 Queue。
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Using generic collections is generally recommended, because you gain the immediate benefit of type safety without having to derive from a base collection type and implement type-specific members.
Using the mechanics of the Tide of Iron base game, these design masters have crafted the first volume in one of the most exciting collections of wargaming history.