Java programming. Please include comments for understanding.

This lab will focus on populating and traversing a two-dimensional array (matrix). Consider a 3 by 3 square containing values Vi to Vo as shown below; conveniently, these values can be represented using a matrix (two-dimensional array) Vi V2 V3 A square is said to be row semi-magic if the values in each of the rows sum to the same value A square is said to be column semi-magic if the values in each of the columns sum to the same value A matrix is said to be magic if the matrix is semi-magic in terms of its rows and its columns. Complete the three corresponding methods that determine if the given matrix is column semi-magic, row semi- magic, and magic. You may not assume the input matrix has a particular number of sides. As a positive test example, use the following magic matrix. We verify that the matrix is magic by noting that 9+42 Implement a Matrix class with a max a a attribute and the necessary methods. The constructor should throw an exception if the input matrix is not square. Also implement a Tester class that constructs and initiaizes a atrix object and tests whether the matrix is magic