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collection - 為什么Java集合框架要用內(nèi)部類迭代器的設(shè)計(jì)來實(shí)現(xiàn)讀取操作?
ringa_lee
ringa_lee 2017-04-18 10:43:42
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Ty80

First statement:

  • Map does not implement the Collection interface

  • Collection means that this is a collection, that is, the interface of the collection is defined

  • Iterator is the interface for traversing collections

Answer:

To reduce coupling. Iterator also needs to be reused as a component, not just used in the Collection interface.

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