试题详情
- 多项选择题 A programmer is developing a class Key, that will be used as a key in a standard java.util.HashMap. Which two methods should be overridden to assure that Key works correctly as a key?()
A、public int hashCode()
B、public void hashCode()
C、public int compareTo(Object o)
D、public boolean equals(Object o)
E、public boolean compareTo(Key k)
- A,D
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