Swapping two arrays

#1

As it is shown in the video, we are not able to swap the references to arrays. So, how will we swap the references to two variable sized array?

#2

As the two-dimensional array in java is actually a array of references to other arrays, you can simply swap the references as shown below:

public static void swapRows(int array[][], int rowA, int rowB) {
   int tmpRow[] = array[rowA];
   array[rowA] = array[rowB];
   array[rowB] = tmpRow;
}