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provides array manipulation utilities
provides collection manipulation utilities
defines base methods for all array objects
defines base methods for all collection objects
provides a concrete implementation of an ordered set
defines base methods for an ordered set
defines methods for linear access to a collection
defines methods for radom access to a collection
Collection Type:
java.util.SortedSet
java.util.Arrays
java.util.Iterator
java.util.TreeSet
java.util.CollectionÁ¬½ÓÌ⣬Çë½Ìһϴó¼Ò£¿
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provides array manipulation utilities ——————java.util.Arrays
provides collection manipulation utilities ————java.util.Collectiondefines base methods for all collection objects ————java.util.Collection
provides aconcrete implementation of an ordered set ————java.util.SortedSet
defines base methods for an ordered set ———java.util.TreeSet
defines methods for linear access to a collection———— java.util.Iterator
defines methods for radom access to a collection————ÎÞÏà¶ÔµÄ
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