Java Arrays Interview Questions

    Question 1: JAVA - Array Declaration

    Which of the following is a valid array declaration in Java?

    Question 2: JAVA - Array Initialization

    What will be the default values of an int array in Java?

    Question 3: JAVA - Array Length

    What will this code print?

    int arr[] = {10, 20, 30, 40};
System.out.println(arr.length);

    Question 4: JAVA - Index Out of Bounds

    What will happen in the code?

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

    Question 5: JAVA - Enhanced For Loop

    What will be the output?

    int[] nums = {1, 2, 3};
for(int n : nums) {
    System.out.print(n + " ");
}

    Question 6: JAVA - Multi-Dimensional Array

    What will this code print?

    int[][] arr = { {1, 2}, {3, 4} };
System.out.println(arr[1][0]);

    Question 7: JAVA - Array Reference

    What will this code print?

    int[] a = {1, 2, 3};
int[] b = a;
b[0] = 99;
System.out.println(a[0]);

    Question 8: JAVA - Array Sorting

    Which class provides a built-in method to sort arrays in Java?

    Question 9: JAVA - Array Copy

    Which method is used for copying array elements efficiently?

    Question 10: JAVA - Array to String

    What will this code print?

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