單項(xiàng)選擇題

Which statement is true for the class java.util.HashSet？（）

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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單項(xiàng)選擇題

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.

單項(xiàng)選擇題

Which method is an appropriate way to determine the cosine of 42 degrees？（）

A. Double d = Math.cos（42）；
B. Double d = Math.cosine（42）；
C. Double d = Math.cos（Math.toRadians（42））；
D. Double d = Math.cos（Math.toDegrees（42））；
E. Double d = Math.cosine（Math.toRadians（42））；

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Which statement is true for the class java.util.HashSet？ （）

你可能感興趣的試題

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？（）

Which method is an appropriate way to determine the cosine of 42 degrees？（）

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Which statement is true for the class java.util.HashSet？（）

Which method is an appropriate way to determine the cosine of 42 degrees？（）