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What will be the output of the following code?
int[] arr = {1, 2, 3, 4, 5};
System.out.println(arr[5]);
1
ArrayIndexOutOfBoundsException
5
Compilation Error
Which of the following statements about arrays in Java are true?
Arrays can hold primitive types and objects.
The size of an array is fixed after it is created.
Arrays in Java are zero-indexed.
You can change the size of an array dynamically.
What will be the output of the following code?
int[] arr = new int[5];
for(int i = 0; i < arr.length; i++) {
arr[i] = i * 2;
}
System.out.println(arr[2]);
0
1
2
4
Which of the following methods can be used to copy an array in Java?
System.arraycopy()
Arrays.copyOf()
clone()
copy()
What is the result of the following code?
int[] arr = {1, 2, 3};
int[] arr2 = arr;
arr2[0] = 10;
System.out.println(arr[0]);
1
2
3
10
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9 Modules