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Question ID 3869	Given: 11.    public class Person { 12.    private String name; 13.    public Person(String name) { 14.    this.name = name; 15.    } 16.    public boolean equals(Object o) { 17.    if ( ! ( o instanceof Person) ) return false; 18.    Person p = (Person) o; 19.    return p.name.equals(this.name); 20.    } 21.    } Which statement is true?
Option A	A.    Compilation fails because the hashCode method is not overridden.
Option B	B.    A HashSet could contain multiple Person objects with the same name.
Option C	C.    All Person objects will have the same hash code because the hashCode method is not overridden.
Option D	D.    If a HashSet contains more than one Person object with name="Fred", then removing another Person, also with name="Fred", will remove them all.
Correct Answer	B

Explanation

Question ID 3870	Given: 3.    import java.util.*; 4.    public class Hancock { 5.    // insert code here 6.    list.add("foo"); 7.    } 8.    } Which two code fragments, inserted independently at line 5, will compile without warnings? (Choose two.)
Option A	A.    public void addStrings(List list) {
Option B	B.    public void addStrings(List<String> list) {
Option C	C.    public void addStrings(List<? super String> list) {
Option D	D.    public void addStrings(List<? extends String> list) {
Correct Answer	B,C

Explanation

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