Question: Hashmap & HashSet

Given:

public class Person {

   private name;
   public Person(String name) {
     this.name = name;
   }
   
   public int hashCode() {
    return 420;
   }
}
Which statement is true?

A. The time to find the value from HashMap with a Person key depends on the size of the map.
B. Deleting a Person key from a HashMap will delete all map entries for all keys of type Person.
C. Inserting a second Person object into a HashSet will cause the first Person object to be
removed as a duplicate.
D. The time to determine whether a Person object is contained in a HashSet is constant and does
NOT depend on the size of the map.


Execution:

A: The more the size Hashmap will have it will take time  to execute which is correct
B. If we will delete a person key then it will not delete all keys of person type. It is just like deleting String key and all String keys got removed.
C. The previous object will get over write not removed
D. To determine size of collection time is always be taken with respect to size.

Answer:
A. The time to find the value from HashMap with a Person key depends on the size of the map.