WorksheetsArray - II
Total questions: 10
Worksheet time: 2mins
Which of the following correctly prints all elements of an array arr?
for(int i=0; i<=arr.length; i++)
for(int i=0; i<arr.length; i++)
for(int i=1; i<arr.length; i++)
for(int i=0; i>arr.length; i++)
int[] a = {5, 10, 15};
System.out.print(a[0]);
0
5
10
Error
int[] a = {2, 4, 6, 8};
System.out.print(a.length);
3
4
5
Error
int[] a = {1, 3, 5};
System.out.print(a[1] + a[2]);
4
6
8
Error
int[] a = {1, 2, 3};
System.out.print(a[3]);
0
3
Compilation Error
Runtime Error
int[] a = {4, 6, 8};
a[1] = 10;
System.out.print(a[1]);
6
8
10
Error
Which of the following correctly declares a 2D array in Java?
int a = new int[2][3];
int[][] a = new int[2][3];
int[2][3] a;
array a[2][3];
int[][] a = {{1, 2}, {3, 4}};
System.out.print(a[0][1]);
1
2
3
4
How many rows are there in the following 2D array?
int[][] a = new int[3][2];
2
3
5
6
int[][] a = new int[2][2];
System.out.print(a[1][1]);
1
null
0
error
