Question

What will be the output of the following code?

char[][] board = [2][2];
for(int i = 0; i < 2; i++)

for(int j = 0; j < 2; j++)

board[i][j] = '+';

board[1][2] = 'x';

for(int i = 0; i < 2; i++)

for(int i = 0; i < 2; i++)

System (board[i][j]);

System.out.println();

Answer 1

The code has errors, including a missing 'new' keyword for array initialization, out-of-bounds access, and incorrect loop variable. If corrected, the output would be a 2x2 grid filled with '+', but as written, the code would throw an IndexOutOfBoundsException.

Step-by-step explanation:

The code provided appears to be attempting to create a 2x2 grid and fill it with the '+' character, then change the character at position (1,2) to an 'x'. However, there are several issues with the code:

• The declaration of the array should use curly braces to specify the size, like new char[2][2], not square brackets.
• The code attempts to access board[1][2], which is out of bounds, since the array is only 2x2 and indexes are 0-based.
• The nested loops for printing have a typo; the second loop's variable should be j instead of i.
• The print statement is missing out keyword.

If corrected, the output assuming a valid array would be:

++
++

However, the IndexOutOfBoundsException will prevent the code from executing properly.