File Square.java contains the shell for a class that represents a square matrix. It contains headers for a constructor that gives the size of the square and methods to read values into the square, print the square, find the sum of a given row, find the sum of a given column, find the sum of the main (or other) diagonal, and determine whether the square is magic. The read method is given for you; you will need to write the others.
File SquareTest.java contains the shell for a program that reads input for squares and tells whether each is a magic square. Following the comments, fill in the remaining code. Run your program on file magicData.txt. You should find that the first, second, and third squares in the input are magic, and that the rest (fourth through seventh) are not. Note that the -1 at the bottom tells the test program to stop reading.
Note: Square.java is your first example of using a Scanner to read input from an external file (magicData.txt, in this case). For this to work properly, magicData.txt must be in the same directory as your .class files. Because you are using BlueJ, this will also be the directory where your .java files are.