Question

Suppose ArrayList x contains two strings [Beijing, Singapore]. Which of the following methods will cause the list to become?

(choose more than one)

A. ("Singapore")
B. (0)
C. (1)
D. (2)

Answer 1

The methods A and C will cause the list to become ["Singapore"].

Step-by-step explanation:

The methods A and C will cause the list to become ["Singapore"].

To replace an element in an ArrayList, you can use the set method. The set method takes two parameters: the index of the element you want to replace and the new value you want to assign to that element.

For example:

1. x.set(0, "Singapore"); // This will replace "Beijing" with "Singapore" in the ArrayList
2. x.set(1, "Singapore"); // This will replace "Singapore" with "Singapore" in the ArrayList