Exam 1z0-808 topic 1 question 127 discussion

Answer is B, tested it

Answer is B void add(int index, E element); IndexOutOfBoundsException – if the index is out of range (index < 0 || index >= size())

Answer is B. Here's an example: public static void main(String[] args) { List <String> colors = new ArrayList(); colors.add("Green"); colors.add("Blue"); colors.add("Red"); colors.add("Yelow"); colors.remove(2); colors.add(3,"Cyan"); System.out.println(colors); }

The correct answer is the letter B, in line 18 the element that is in index 2 of the list is removed, remembering that Java indexes from 0, the element that will be removed is "red" and "yellow" which was in position 3 of the list after removal goes to position 2, in line 19 the element "cyan" is added at position 3 which is empty. and when printing on line 20, it returns [green, blue, yellow, cyan] which is the answer for the letter B. There is no way to throw the exception "IndexOutOfBounds" because in the line that the exclusion is made, it was made in a position that it had in the list and addition as well, since it was an empty position and the list was not set a fixed size for it.

Result should be B, from the documentation the add(int index, object element) method will only raise IndexOutOfBoundsException if the index is out of range (index < 0 || index > size()). https://docs.oracle.com/javase/8/docs/api/java/util/List.html#add-int-E-