Java Array MCQs with answers Page - 1

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Q. What is the index of the first element in a Java array?

  • (A) 1
  • (B) 0
  • (C) -1
  • (D) Depends on array size

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Q. Which of the following is a correct way to declare an array in Java?

  • (A) int arr[] = new int[5];
  • (B) array int arr = new array[5];
  • (C) int arr = new int(5);
  • (D) int[5] arr;

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Q. What is the default value of elements in a boolean array?

  • (A) true
  • (B) false
  • (C) 0
  • (D) null

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Q. How do you find the length of an array in Java?

  • (A) arr.length()
  • (B) arr.size()
  • (C) arr.length
  • (D) arr.getLength()

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Q. What will be the output?
int[] arr = {1, 2, 3};
System.out.print(arr[1]);

  • (A) 1
  • (B) 2
  • (C) 3
  • (D) IndexOutOfBoundsException

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Q. Which of the following creates a two-dimensional array in Java?

  • (A) int[][] arr = new int[3][3];
  • (B) int arr[3][3];
  • (C) int arr = int[3,3];
  • (D) int arr(3)(3);

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Q. What is the output?
int[] arr = new int[5];
System.out.print(arr[2]);

  • (A) 0
  • (B) 2
  • (C) null
  • (D) undefined

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Q. Which statement is true about arrays in Java?

  • (A) Arrays are dynamic in size
  • (B) Arrays can only hold primitives
  • (C) Array size is fixed after creation
  • (D) Arrays are only 1D

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Q. What is the base type of an array declared as: int[] arr = new int[10];?

  • (A) Object
  • (B) int
  • (C) Integer
  • (D) Array

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Q. What happens if you try to access an array index beyond its bounds?

  • (A) Returns null
  • (B) Returns 0
  • (C) Compiles but throws error at runtime
  • (D) Compiles and returns garbage value

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