What are jagged arrays ???
Arrays of arrays is called as Jagged arrays.
Lets see an example:
int[][] jArray = new int[3][];
jArray[0] = new int[] { 2, 4, 6 };
jArray[1] = new int[] { 1,3,5,7,9 };
jArray[2] = new int[] { 4,9,16,25 };
int val = jArray[0][1]; //4
int val1 = jArray[1][2]; //5