单项选择题
Given：
What is the result？（）
A.Compilation fails due to an error in line 23.
B.Compilation fails due to an error in line 29.
C.A ClassCastException occurs in line 29.
D.A ClassCastException occurs in line 31.
E.The value of all four objects prints in natural order.
相关考题
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多项选择题
Given a pre-generics implementation of a method： What three changes allow the class to be used with generics and avoid an unchecked warning？（）
A.Remove line 14.
B.Replace line 14 with "int i = iter.next（）；".
C.Replace line 13 with "for （int i ： intList） {".
D.Replace line 13 with "for （Iterator iter ： intList） {".
E.Replace the method declaration with "sum（ListintList）".
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单项选择题
Given： Which method will complete this class？（）
A.public int compareTo（Object o）{/*more code here*/}
B.public int compareTo（Score other）{/*more code here*/}
C.public int compare（Score s1，Score s2）{/*more code here*/}
D.public int compare（Object o1，Object o2）{/*more code here*/} -
多项选择题
WhichtwostatementsaretrueaboutthehashCodemethod？（）
A.The hashCode method for a given class can be used to test for object equality and object inequality for that class.
B.The hashCode method is used by the java.util.SortedSet collection class to order the elements within that set.
C.The hashCode method for a given class can be used to test for object inequality， but NOT objecte quality， for that class.
D.The only important characteristic of the values returned by a hashCode method is that the distribution of values must follow a Gaussian distribution.
E.The hashCode method is used by the java.util.HashSet collection class to group the elements within that set into hash buckets for swift retrieval.
