Array and ArrayLists in Java

What are the legal indexes for the array ar, given the following declaration:

int[] ar = {2, 4, 6, 8 }

•  0, 1, 2, 3
•  1, 2, 3, 4
• 2, 4, 6, 8
•  0, 2, 4, 6

What is the first index of an array?

• 1

• 0

• 2

• 3

int [] nums = {2, 3, 5, 8, 9, 11};

How would you access the fourth element in nums?

• nums[4]

• nums[3]

• nums(4)

• nums(3)

Which of the following statements outputs the fifth value in the quizzes array?

• System.out.println(quizzes[5]);
• quizzes[4];
• quizzes[5];
• System.out.println(quizzes[4]);

Create an array of 12 strings called months.

• String[] months = new String[12];
• String months = new String[12];
• String[] months = new String[];
• String[12] months = new String[];

Given the following method, what would test return if
a = {0, 2, 3, 4} and v = 1?

• -1
• 0
• 1
• 2

What value is at index 1 in this array?  String[] names = {"Mack", "Dennis", "Dee", "Charlie"};

• Mack
• Dennis
• Dee
• Charlie

True or False:  An array can be store different types of data (like store both doubles and ints).

• True
• False

What is the correct way to create an array with these three numbers: 12  8  15

• int[] = {12, 8, 15};
• int[] nums = {12  8  15};
• int[] nums = {12, 8, 15}
• int[] nums = {12, 8, 15};

Which of the following statements correctly declares a two-dimensional integer array?

• int Matrix[ ] = new int[5,4];

• int Matrix[ ]; Matrix = new int[5,4];

• int Matrix[ ][ ] = new int[5][4];

• int Matrix[ ][ ] = int[5][4];