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Java Package

Question : 7

Total: 16

Given:

1. public class Person {
2.   private String name;
3.   public Person(String name) {
4.    this.name = name;
5.   }
6.   public boolean equals(Object o) {
7.    if ( ! o instanceof Person ) return false;
8.    Person p = (Person) o;
9.    return p.name.equals(this.name);
10.   }
11. }

Which statement is true?

Compilation fails because the hashCode method is not overridden.
A HashSet could contain multiple Person objects with the same name
All Person objects will have the same hash code because the hashCode method is not overridden.
If a HashSet contains more than one Person object with name="Fred", then removing another Person, also with name="Fred", will remove them all.

Validate

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