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多选题
You need to store elements in a collection that guarantees that no duplicates are stored. Which two interfaces provide that capability？（）
A
Java.util.Map
B
Java.util.Set
C
Java.util.List
D
Java.util.StoredSet
E
Java.util.StoredMap
F
Java.util.Collection
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单选题You need to store elements in a collection that guarantees that no duplicates are stored and all elements can be accessed in natural order. Which interface provides that capability？（）A
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Java.util.Set.C
Java.util.List.D
Java.util.StoredSet.E
Java.util.StoredMap.F
Java.util.Collection.
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单选题You need to store elements in a collection that guarantees that no duplicates are stored and all elements can be accessed in natural order. Which interface provides that capability？（）A
Java.util.Map.B
Java.util.Set.C
Java.util.List.D
Java.util.StoredSet.E
Java.util.StoredMap.F
Java.util.Collection.
考题
单选题Which statement is true for the class java.util.ArrayList？（）A
The elements in the collection are ordered.B
The collection is guaranteed to be immutable.C
The elements in the collection are guaranteed to be unique.D
The elements in the collection are accessed using a unique key.E
The elements in the collections are guaranteed to be synchronized.
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