Question

Invoking _______ returns the number of the elements in an ArrayList x.

A. x.getSize()
B. x.getLength(0)
C. (1)
D. ()

Answer 1

The correct answer is A. x.getSize()

Step-by-step explanation:

The correct answer to the question is A. x.getSize().

The x.getSize() method is used to return the number of elements present in an ArrayList. This method is specific to the ArrayList class in Java, which is a resizable array implementation of the List interface.

Here's an example:

ArrayList numbers = new ArrayList();
numbers.add(10);
numbers.add(20);
numbers.add(30);

int size = numbers.getSize();
System.out.println(size); // Output: 3