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Given： Which statement is true？（）
A:The equals method does NOT properly override the Object.equals method.
B:Compilation fails because the private attribute p.name cannot be accessed in line 5.
C:To work correctly with hash-based data structures,this class must also implement the hashCode method.
D:When adding Person objects to a java.util.Set collection,the equals method in line 4 will prevent duplicates.

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出自：Oracle认证

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