Please WRITE COMMENTS for each aspect of your JAVA code.

Given a square matrix m[3x3], create a java code to calculate the value of its SECONDARY Diagonal.

See example below. Hint: In order to better understand the concepts involved in this exercises, research the terms square matrix and secondary diagonal of a matrix using your favourite search engine.

Example given matrix m[3x3] shown below:

(0,0) (0,1) (0,2) | 10 12 11

(1,0) (1,1) (1,2) | 9 8 31

(2,0) (2,1) (2,2) | 2 16 24

Secondary Diagonal (generic m[3x3]) = m[0,2] + m[1,1] + m[2,0]

Secondary Diagonal (as in the example above) = 11 + 8 + 2 = 21

Note 1: Your java code MUST be GENERIC to calculate the secondary diagonal of ANY square matrix [2x2], [3x3],[4x4], etc. (Use a constant in your code to set the values of numberOfRows and numberOfColumns of your matrix.

Note 2: Your matrix may be hardcoded (no need of user interaction)

Note 3: In case numberOfRows and numberOfColumns are different, your program must display the following message: This is not a square matrix.