java code please

A magic square of size 3 is a 3-by-3 two-dimensional array of the integers from 1 to 9 in which every row, column, and diagonal sums to the same value. For example, the square below is a magic square. 2 9 4 7 5 3 6 1 8 Your task for this lab is to write and thoroughly test a method that determines whether or not a given two-dimensional array is a magic square of size 3.Your method should have the following signature: public boolean isMagicSquare3 (int [] [] arr)