// array of arrays -- aliasing can happen!

public class aoa2 {
    public static void main(String args[]) {

        int[] a = { 1, 2 } ;
        int[][] A = { a, a} ; 
        for (int i = 0; i < A.length; i++) {
            for (int j = 0; j < A[0].length; j++)
                System.out.print(A[i][j] + " ");
            System.out.println();
        }
        A[0][1] = 7;
        for (int i = 0; i < A.length; i++) {
            for (int j = 0; j < A[0].length; j++)
                System.out.print(A[i][j] + " ");
            System.out.println();
        }
    } // method main
} // class aliasing_array_of_arrays

/* output
1 2 
1 2 
1 7 
1 7 
*/