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單項(xiàng)選擇題

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.

你可能感興趣的試題

多項(xiàng)選擇題

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

單項(xiàng)選擇題

switch （i） {
default：
System.out.printIn（“Hello”）；
}
What is the acceptable type for the variable i？（）

A. Byte
B. Long
C. Float
D. Double
E. Object
F. A and B
G. C and D

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

你可能感興趣的試題

You need to store elements in a collection that guarantees that no duplicates are stored. Which two interfaces provide that capability？（）

switch （i） { default： System.out.printIn（“Hello”）； } What is the acceptable type for the variable i？（）

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

You need to store elements in a collection that guarantees that no duplicates are stored. Which two interfaces provide that capability？（）

switch （i） {
default：
System.out.printIn（“Hello”）；
}
What is the acceptable type for the variable i？（）