How do you determine the number of elements in an array?

A. buses.length

B. buses.length()

C. buses.size

D. buses.size()

Answer:

A. buses.length

Explanation:

Arrays use the length variable to determine the number of elements, making Option A correct. 

For an ArrayList, Option D would have been the answer.

Example: Java program to illustrate how to get the length of the array: 

// Java program to illustrate
// how to get the length of the array

public class Test {
	public static void main(String[] args)
	{

		// Here array is the
		// array name of int type
		int[] array = new int[4];

		System.out.println("The size of "
						+ "the array is "
						+ array.length);
	}
}

Output:

The size of the array is 4