Multiple choice technology

Given: 1. public class Person { 2. private String name; 3. public Person(String name) { this.name = name; } 4. public boolean equals(Person p) { 5. return p.name.equals(this.name); 6. } 7. } Which statement is true?

  1. The equals method does NOT properly override the Object.equals method.

  2. Compilation fails because the private attribute p.name cannot be accessed in line 5.

  3. To work correctly with hash-based data structures, this class must also implement the hashCode method.

  4. When adding Person objects to a java.util.Set collection, the equals method in line 4 will prevent duplicates.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The equals method does NOT properly override Object.equals because it takes a Person parameter instead of Object. A proper override must have the exact signature 'boolean equals(Object obj)'. This is an overload, not an override. Option B is incorrect because private fields of the same object type can be accessed. Option C is true but not the primary issue.

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