Given:import java.util.*;public class Group extends HashSet { public static void main(String[] args) { Group g = new Group(); g.add(new Person("Hans")); g.add(new Person("Lotte")); g.add(new Person("Jane")); g.add(new Person("Hans")); g.add(new Person("Jane")); System.out.println("Total: " + g.size()); } public boolean add(Object o) { System.out.println("Adding: " + o); return super.add(o); }}class Person { private final String name; public Person(String name) { this.name = name; } public String toString() { return name; }} Which of the following occur at least once when the code is compiled and run?(Choose all that apply.)

Question

Given:import java.util.*;public class Group extends HashSet < Person > {  public static void main(String[] args) {   Group g = new Group();   g.add(new Person("Hans"));   g.add(new Person("Lotte"));   g.add(new Person("Jane"));   g.add(new Person("Hans"));   g.add(new Person("Jane"));   System.out.println("Total: " + g.size());  }  public boolean add(Object o) {   System.out.println("Adding: " + o);   return super.add(o);  }}class Person {  private final String name;  public Person(String name) { this.name = name; }  public String toString() { return name; }} Which of the following occur at least once when the code is compiled and run?(Choose all that apply.)

Examsnet · Accepted Answer

Correct Answer is : The code does not compile.

Collections and Generics

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