Write a Java program that does the following: 1- Define a matrix called cat of the size (nxn), and let the user enters its values by using while loop. 2. Define a one dimension array called lab, so that its size is the number of non-diagonal elements in the previous matrix cat. (2 marks) 3. The array lab entries should be the non-diagonal elements in the previous matrix cat. 4- Print out the third large number of array lab