Exam 1z0-808 topic 1 question 103 discussion

Correct answer : C

E is correct

E is correct

Answer is E. [1,3,4]

points.remove(null) makes a call to remove(Object). ArrayList class provides two overloaded remove() methods. remove(int index): Accepts the index of the object to be removed remove(Object obj): Accepts the object to be removed

Answer is E. [1,3,4]

Answer is [ 1, 3, 4 ]

The right answer is the letter E, because the number 1 is added in the second line of the list, but the list indexes from 0, so the 1 is in position zero and the removal done in line 7 removes the data in position 1 of the list which is 2. Remembering that you cannot give the NullPointer exception because lists can print null if it is inserted in one of the positions of the list, it would only give NullPointer exception if the list was empty. If you have any doubts, I'll also test the code, feel free: public static void main(String[] args) { ArrayList<Integer> points = new ArrayList<>(); points.add(1); points.add(2); points.add(3); points.add(4); points.add(null); points.remove(1); points.remove(null); System.out.println(points); }

Correct answer should be [1,3,4]