Java Find Output Questions and Answers - Array

Here are 10 Java code snippets designed to test your understanding of Java Arrays. Each question includes a code snippet and multiple-choice options for the output. After you complete the test, you can check your score, the correct answer, and an explanation. These snippets cover basic operations with arrays, such as indexing, assignments, and properties like length and default initialization values

1. What will be the output of the following Java code?

int[] arr = {1, 2, 3, 4, 5};
System.out.println(arr[2]);

a) 1

b) 2

c) 3

d) 4

2. What will be the output of the following Java code?

int[] arr = new int[3];
System.out.println(arr[0]);

a) null

b) 0

c) 1

d) undefined

3. What will be the output of the following Java code?

int[] arr = {1, 2, 3};
System.out.println(arr[3]);

a) 3

b) Throws an exception

c) 0

d) undefined

4. What will be the output of the following Java code?

String[] languages = {"Java", "Python", "C++"};
System.out.println(languages.length);

a) 2

b) 3

c) 4

d) None of the above

5. What will be the output of the following Java code?

int[] numbers = {10, 20, 30, 40, 50};
numbers[2] = 60;
System.out.println(numbers[2]);

a) 30

b) 60

c) 20

d) 10

6. What will be the output of the following Java code?

int[] a = {1, 2, 3};
int[] b = a;
b[0] = 10;
System.out.println(a[0]);

a) 1

b) 10

c) 0

d) 2

7. What will be the output of the following Java code?

char[] arr = {'A', 'B', 'C'};
System.out.println(arr[1]);

a) A

b) B

c) C

d) None of the above

8. What will be the output of the following Java code?

int[] arr = {7, 8, 9};
System.out.println(arr[arr[1]]);

a) 7

b) 8

c) 9

d) Throws an exception

9. What will be the output of the following Java code?

double[] arr = {1.1, 2.2, 3.3};
arr[0] = arr[2];
System.out.println(arr[0]);

a) 1.1

b) 2.2

c) 3.3

d) None of the above

10. What will be the output of the following Java code?

boolean[] arr = new boolean[5];
System.out.println(arr[3]);

a) true

b) false

c) null

d) Throws an exception