Find the error(s) in the following code. The twoDArrays method should create a two- dimensional array and initialize all its values to 1.

Question

```
1 private void twoDArrays()
2 {
3 int[][] array = new int[ 4 ][ 4 ];
4
5 // assign 1 to all cell values
6 for ( int i = 0; i < 4; i++ )
7 {
8 array[ i ][ i ] = 1;
9
10 } // end for
11
12 } // end method twoDArrays
```

Answer 1

The for statement used will only change the cells located in array[ 0 ][ 0 ], array[ 1 ][ 1 ], array[ 2 ][ 2 ] and array[ 3 ][ 3 ]. There must be a second for statement added to change the values in the entire two-dimensional array.
```
1 private void twoDArrays()
2 {
3 int[][] array = new int[ 4 ][ 4 ];
4
5 // assign 1 to all cell values
6 for ( int i = 0; i < 4; i++ )
7 {
8 for ( int j = 0; j < 4; j++ )
9 {
10 array[ i ][ j ] = 1;
11
12 } // end inner for
13
14 } // end for
15
16 } // end method twoDArrays
```